diff --git a/includes/blocks/class-convertkit-block-broadcasts.php b/includes/blocks/class-convertkit-block-broadcasts.php
index ac7abb3fd..e416ed1b3 100644
--- a/includes/blocks/class-convertkit-block-broadcasts.php
+++ b/includes/blocks/class-convertkit-block-broadcasts.php
@@ -45,9 +45,9 @@ public function register_routes() {
 
 		register_rest_route(
 			'kit/v1',
-			'/broadcasts/render',
+			'/broadcasts',
 			array(
-				'methods'             => WP_REST_Server::CREATABLE,
+				'methods'             => WP_REST_Server::READABLE,
 				'args'                => array(
 					'date_format'         => array(
 						'default'           => $this->get_default_value( 'date_format' ),
@@ -95,8 +95,7 @@ public function register_routes() {
 					),
 				),
 				'callback'            => function ( $request ) {
-					$html = $this->render_ajax( $request );
-					return rest_ensure_response( array( 'data' => $html ) );
+					return rest_ensure_response( $this->render_ajax( $request ) );
 				},
 
 				// No authentication required, as this is on the frontend site.
@@ -122,7 +121,7 @@ public function enqueue_scripts() {
 			'convertkit_broadcasts',
 			array(
 				// REST API URL endpoint.
-				'ajax_url' => rest_url( 'kit/v1/broadcasts/render' ),
+				'ajax_url' => rest_url( 'kit/v1/broadcasts' ),
 
 				// Whether debugging is enabled.
 				'debug'    => $settings->debug_enabled(),
@@ -629,9 +628,21 @@ public function render_ajax( $request ) {
 		// and moving some attributes (such as Gutenberg's styles), if defined.
 		$atts = $this->sanitize_and_declare_atts( $atts );
 
+		// Setup Settings class.
+		$settings = new ConvertKit_Settings();
+
 		// Fetch Posts.
 		$posts = new ConvertKit_Resource_Posts( 'output_broadcasts' );
 
+		// If no Posts exist, bail.
+		if ( ! $posts->exist() ) {
+			if ( $settings->debug_enabled() ) {
+				return '<!-- ' . __( 'No Broadcasts exist in Kit.', 'convertkit' ) . ' -->';
+			}
+
+			return '';
+		}
+
 		// Build HTML.
 		$html = $this->build_html( $posts, $atts, false );
 
diff --git a/resources/frontend/js/broadcasts.js b/resources/frontend/js/broadcasts.js
index 36c327ccb..6783e817b 100644
--- a/resources/frontend/js/broadcasts.js
+++ b/resources/frontend/js/broadcasts.js
@@ -58,14 +58,12 @@ function convertKitBroadcastsRender(blockContainer, atts) {
 	// Show loading indicator.
 	blockContainer.classList.add('convertkit-broadcasts-loading');
 
+	// Build URL with query string parameters.
+	const params = new URLSearchParams(atts);
+	const url = `${convertkit_broadcasts.ajax_url}?${params.toString()}`;
+
 	// Fetch HTML.
-	fetch(convertkit_broadcasts.ajax_url, {
-		method: 'POST',
-		headers: {
-			'Content-Type': 'application/x-www-form-urlencoded',
-		},
-		body: new URLSearchParams(atts),
-	})
+	fetch(url)
 		.then(function (response) {
 			if (convertkit_broadcasts.debug) {
 				console.log(response);
@@ -82,7 +80,7 @@ function convertKitBroadcastsRender(blockContainer, atts) {
 			blockContainer.classList.remove('convertkit-broadcasts-loading');
 
 			// Replace block container's HTML with response data.
-			blockContainer.innerHTML = result.data;
+			blockContainer.innerHTML = result;
 		})
 		.catch(function (error) {
 			if (convertkit.debug) {
diff --git a/resources/frontend/js/restrict-content.js b/resources/frontend/js/restrict-content.js
index 48dd67290..9ec1442e7 100644
--- a/resources/frontend/js/restrict-content.js
+++ b/resources/frontend/js/restrict-content.js
@@ -150,10 +150,10 @@ function convertKitRestrictContentSubscriberAuthenticationSendCode(
 	fetch(convertkit_restrict_content.subscriber_authentication_url, {
 		method: 'POST',
 		headers: {
-			'Content-Type': 'application/x-www-form-urlencoded',
+			'Content-Type': 'application/json',
 			'X-WP-Nonce': nonce,
 		},
-		body: new URLSearchParams({
+		body: JSON.stringify({
 			convertkit_email: email,
 			convertkit_resource_type: resource_type,
 			convertkit_resource_id: resource_id,
@@ -223,10 +223,10 @@ function convertKitRestrictContentSubscriberVerification(
 	fetch(convertkit_restrict_content.subscriber_verification_url, {
 		method: 'POST',
 		headers: {
-			'Content-Type': 'application/x-www-form-urlencoded',
+			'Content-Type': 'application/json',
 			'X-WP-Nonce': nonce,
 		},
-		body: new URLSearchParams({
+		body: JSON.stringify({
 			subscriber_code,
 			token,
 			convertkit_post_id: post_id,
diff --git a/tests/Integration/RESTAPIBroadcastsTest.php b/tests/Integration/RESTAPIBroadcastsTest.php
new file mode 100644
index 000000000..cacbdbbe8
--- /dev/null
+++ b/tests/Integration/RESTAPIBroadcastsTest.php
@@ -0,0 +1,107 @@
+<?php
+
+namespace Tests;
+
+use lucatume\WPBrowser\TestCase\WPRestApiTestCase;
+
+/**
+ * Tests for the REST API Broadcasts routes.
+ *
+ * @since   3.1.9
+ */
+class RESTAPIBroadcastsTest extends WPRestApiTestCase
+{
+	/**
+	 * The testing implementation.
+	 *
+	 * @var \IntegrationTester
+	 */
+	protected $tester;
+
+	/**
+	 * Holds the ConvertKit Settings class.
+	 *
+	 * @since   3.1.9
+	 *
+	 * @var     ConvertKit_Settings
+	 */
+	private $settings;
+
+	/**
+	 * Performs actions before each test.
+	 *
+	 * @since   3.1.9
+	 */
+	public function setUp(): void
+	{
+		parent::setUp();
+
+		// Activate Plugin, to include the Plugin's constants in tests.
+		activate_plugins('convertkit/wp-convertkit.php');
+
+		// Store Credentials in Plugin's settings.
+		$this->settings = new \ConvertKit_Settings();
+		$this->settings->save(
+			array(
+				'access_token'  => $_ENV['CONVERTKIT_OAUTH_ACCESS_TOKEN'],
+				'refresh_token' => $_ENV['CONVERTKIT_OAUTH_REFRESH_TOKEN'],
+				'token_expires' => ( time() + 10000 ),
+			)
+		);
+
+		// Tell WordPress that we're making REST API requests.
+		// This constant isn't set by the WP_REST_Server class in tests.
+		if ( ! defined( 'REST_REQUEST' ) ) {
+			define( 'REST_REQUEST', true );
+		}
+	}
+
+	/**
+	 * Performs actions after each test.
+	 *
+	 * @since   3.1.9
+	 */
+	public function tearDown(): void
+	{
+		// Delete Credentials from Plugin's settings.
+		$this->settings->delete_credentials();
+		parent::tearDown();
+	}
+
+	/**
+	 * Test that the /wp-json/kit/v1/broadcasts REST API route returns a 200
+	 * with no data when no broadcasts exist.
+	 *
+	 * @since   3.1.9
+	 */
+	public function testWhenNoBroadcastsExist()
+	{
+		$request  = new \WP_REST_Request( 'GET', '/kit/v1/broadcasts' );
+		$response = rest_get_server()->dispatch( $request );
+
+		// Assert response is successful.
+		$this->assertSame( 200, $response->get_status() );
+		$this->assertEquals( '', $response->get_data() );
+	}
+
+	/**
+	 * Test that the /wp-json/kit/v1/broadcasts REST API route returns a 200
+	 * with data when broadcasts exist.
+	 *
+	 * @since   3.1.9
+	 */
+	public function testWhenBroadcastsExist()
+	{
+		// Refresh resources.
+		$broadcasts = new \ConvertKit_Resource_Posts( 'output_broadcasts' );
+		$broadcasts->refresh();
+
+		// Send request.
+		$request  = new \WP_REST_Request( 'GET', '/kit/v1/broadcasts' );
+		$response = rest_get_server()->dispatch( $request );
+
+		// Assert response is successful.
+		$this->assertSame( 200, $response->get_status() );
+		$this->assertNotEmpty( $response->get_data() );
+	}
+}
diff --git a/tests/Integration/RESTAPIRestrictContentTest.php b/tests/Integration/RESTAPIRestrictContentTest.php
new file mode 100644
index 000000000..02cd7e5eb
--- /dev/null
+++ b/tests/Integration/RESTAPIRestrictContentTest.php
@@ -0,0 +1,309 @@
+<?php
+
+namespace Tests;
+
+use lucatume\WPBrowser\TestCase\WPRestApiTestCase;
+
+/**
+ * Tests for the REST API Restrict Content routes.
+ *
+ * @since   3.1.9
+ */
+class RESTAPIRestrictContentTest extends WPRestApiTestCase
+{
+	/**
+	 * The testing implementation.
+	 *
+	 * @var \IntegrationTester
+	 */
+	protected $tester;
+
+	/**
+	 * Holds the ConvertKit Settings class.
+	 *
+	 * @since   3.1.9
+	 *
+	 * @var     ConvertKit_Settings
+	 */
+	private $settings;
+
+	/**
+	 * Performs actions before each test.
+	 *
+	 * @since   3.1.9
+	 */
+	public function setUp(): void
+	{
+		parent::setUp();
+
+		// Activate Plugin, to include the Plugin's constants in tests.
+		activate_plugins('convertkit/wp-convertkit.php');
+
+		// Store Credentials in Plugin's settings.
+		$this->settings = new \ConvertKit_Settings();
+		$this->settings->save(
+			array(
+				'access_token'  => $_ENV['CONVERTKIT_OAUTH_ACCESS_TOKEN'],
+				'refresh_token' => $_ENV['CONVERTKIT_OAUTH_REFRESH_TOKEN'],
+				'token_expires' => ( time() + 10000 ),
+			)
+		);
+	}
+
+	/**
+	 * Performs actions after each test.
+	 *
+	 * @since   3.1.9
+	 */
+	public function tearDown(): void
+	{
+		// Delete Credentials from Plugin's settings.
+		$this->settings->delete_credentials();
+		parent::tearDown();
+	}
+
+	/**
+	 * Test that the /wp-json/kit/v1/restrict-content/subscriber-authentication REST API route when
+	 * requesting the subscriber authentication email to be sent for a given Form ID and subscriber
+	 *
+	 * @since   3.1.0
+	 */
+	public function testRestrictContentSubscriberAuthenticationForm()
+	{
+		// Create a Post.
+		$post_id = static::factory()->post->create( [ 'post_title' => 'Test Post' ] );
+
+		// Build request.
+		$request = new \WP_REST_Request( 'POST', '/kit/v1/restrict-content/subscriber-authentication' );
+		$request->set_header( 'Content-Type', 'application/x-www-form-urlencoded' );
+		$request->set_body_params(
+			[
+				'convertkit_email'         => $_ENV['CONVERTKIT_API_SUBSCRIBER_EMAIL'],
+				'convertkit_resource_type' => 'form',
+				'convertkit_resource_id'   => $_ENV['CONVERTKIT_API_FORM_ID'],
+				'convertkit_post_id'       => $post_id,
+			]
+		);
+
+		// Send request.
+		$response = rest_get_server()->dispatch( $request );
+
+		// Assert response is successful.
+		$this->assertSame( 200, $response->get_status() );
+
+		// Assert response data has the expected keys and data.
+		$data = $response->get_data();
+		$this->assertIsArray( $data );
+		$this->assertTrue( $data['success'] );
+		$this->assertArrayHasKey( 'data', $data );
+	}
+
+	/**
+	 * Test that the /wp-json/kit/v1/restrict-content/subscriber-authentication REST API route when
+	 * requesting the subscriber authentication email to be sent for a given Form ID and an invalid subscriber email is given
+	 *
+	 * @since   3.1.0
+	 */
+	public function testRestrictContentSubscriberAuthenticationFormInvalidEmail()
+	{
+		// Create a Post.
+		$post_id = static::factory()->post->create( [ 'post_title' => 'Test Post' ] );
+
+		// Build request.
+		$request = new \WP_REST_Request( 'POST', '/kit/v1/restrict-content/subscriber-authentication' );
+		$request->set_header( 'Content-Type', 'application/x-www-form-urlencoded' );
+		$request->set_body_params(
+			[
+				'convertkit_email'         => 'fail@kit.com',
+				'convertkit_resource_type' => 'form',
+				'convertkit_resource_id'   => $_ENV['CONVERTKIT_API_FORM_ID'],
+				'convertkit_post_id'       => $post_id,
+			]
+		);
+
+		// Send request.
+		$response = rest_get_server()->dispatch( $request );
+
+		// Assert response is successful.
+		$this->assertSame( 200, $response->get_status() );
+
+		// Assert response data has the expected keys and data.
+		$data = $response->get_data();
+		$this->assertIsArray( $data );
+		$this->assertFalse( $data['success'] );
+		$this->assertArrayHasKey( 'data', $data );
+	}
+
+	/**
+	 * Test that the /wp-json/kit/v1/restrict-content/subscriber-authentication REST API route when
+	 * requesting the subscriber authentication email to be sent for a given Tag ID and subscriber
+	 *
+	 * @since   3.1.0
+	 */
+	public function testRestrictContentSubscriberAuthenticationTag()
+	{
+		// Create a Post.
+		$post_id = static::factory()->post->create( [ 'post_title' => 'Test Post' ] );
+
+		// Build request.
+		$request = new \WP_REST_Request( 'POST', '/kit/v1/restrict-content/subscriber-authentication' );
+		$request->set_header( 'Content-Type', 'application/x-www-form-urlencoded' );
+		$request->set_body_params(
+			[
+				'convertkit_email'         => $_ENV['CONVERTKIT_API_SUBSCRIBER_EMAIL'],
+				'convertkit_resource_type' => 'tag',
+				'convertkit_resource_id'   => $_ENV['CONVERTKIT_API_TAG_ID'],
+				'convertkit_post_id'       => $post_id,
+			]
+		);
+
+		// Send request.
+		$response = rest_get_server()->dispatch( $request );
+
+		// Assert response is successful.
+		$this->assertSame( 200, $response->get_status() );
+
+		// Assert response data has the expected keys and data.
+		$data = $response->get_data();
+		$this->assertIsArray( $data );
+		$this->assertTrue( $data['success'] );
+		$this->assertArrayHasKey( 'data', $data );
+	}
+
+	/**
+	 * Test that the /wp-json/kit/v1/restrict-content/subscriber-authentication REST API route when
+	 * requesting the subscriber authentication email to be sent for a given Tag ID and an invalid subscriber email is given
+	 *
+	 * @since   3.1.0
+	 */
+	public function testRestrictContentSubscriberAuthenticationTagInvalidEmail()
+	{
+		// Create a Post.
+		$post_id = static::factory()->post->create( [ 'post_title' => 'Test Post' ] );
+
+		// Build request.
+		$request = new \WP_REST_Request( 'POST', '/kit/v1/restrict-content/subscriber-authentication' );
+		$request->set_header( 'Content-Type', 'application/x-www-form-urlencoded' );
+		$request->set_body_params(
+			[
+				'convertkit_email'         => 'fail@kit.com',
+				'convertkit_resource_type' => 'tag',
+				'convertkit_resource_id'   => $_ENV['CONVERTKIT_API_TAG_ID'],
+				'convertkit_post_id'       => $post_id,
+			]
+		);
+
+		// Send request.
+		$response = rest_get_server()->dispatch( $request );
+
+		// Assert response is successful.
+		$this->assertSame( 200, $response->get_status() );
+
+		// Assert response data has the expected keys and data.
+		$data = $response->get_data();
+		$this->assertIsArray( $data );
+		$this->assertFalse( $data['success'] );
+		$this->assertArrayHasKey( 'data', $data );
+	}
+
+	/**
+	 * Test that the /wp-json/kit/v1/restrict-content/subscriber-authentication REST API route when
+	 * requesting the subscriber authentication email to be sent for a given Product ID and subscriber
+	 *
+	 * @since   3.1.0
+	 */
+	public function testRestrictContentSubscriberAuthenticationProduct()
+	{
+		// Create a Post.
+		$post_id = static::factory()->post->create( [ 'post_title' => 'Test Post' ] );
+
+		// Build request.
+		$request = new \WP_REST_Request( 'POST', '/kit/v1/restrict-content/subscriber-authentication' );
+		$request->set_header( 'Content-Type', 'application/x-www-form-urlencoded' );
+		$request->set_body_params(
+			[
+				'convertkit_email'         => $_ENV['CONVERTKIT_API_SUBSCRIBER_EMAIL'],
+				'convertkit_resource_type' => 'product',
+				'convertkit_resource_id'   => $_ENV['CONVERTKIT_API_PRODUCT_ID'],
+				'convertkit_post_id'       => $post_id,
+			]
+		);
+
+		// Send request.
+		$response = rest_get_server()->dispatch( $request );
+
+		// Assert response is successful.
+		$this->assertSame( 200, $response->get_status() );
+
+		// Assert response data has the expected keys and data.
+		$data = $response->get_data();
+		$this->assertIsArray( $data );
+		$this->assertTrue( $data['success'] );
+		$this->assertArrayHasKey( 'data', $data );
+	}
+
+	/**
+	 * Test that the /wp-json/kit/v1/restrict-content/subscriber-authentication REST API route when
+	 * requesting the subscriber authentication email to be sent for a given Product ID and an invalid subscriber email is given
+	 *
+	 * @since   3.1.0
+	 */
+	public function testRestrictContentSubscriberAuthenticationProductInvalidEmail()
+	{
+		// Create a Post.
+		$post_id = static::factory()->post->create( [ 'post_title' => 'Test Post' ] );
+
+		// Build request.
+		$request = new \WP_REST_Request( 'POST', '/kit/v1/restrict-content/subscriber-authentication' );
+		$request->set_header( 'Content-Type', 'application/x-www-form-urlencoded' );
+		$request->set_body_params(
+			[
+				'convertkit_email'         => 'fail@kit.com',
+				'convertkit_resource_type' => 'product',
+				'convertkit_resource_id'   => $_ENV['CONVERTKIT_API_PRODUCT_ID'],
+				'convertkit_post_id'       => $post_id,
+			]
+		);
+
+		// Send request.
+		$response = rest_get_server()->dispatch( $request );
+
+		// Assert response is successful.
+		$this->assertSame( 200, $response->get_status() );
+
+		// Assert response data has the expected keys and data.
+		$data = $response->get_data();
+		$this->assertIsArray( $data );
+		$this->assertFalse( $data['success'] );
+		$this->assertArrayHasKey( 'data', $data );
+	}
+
+	/**
+	 * Test that the /wp-json/kit/v1/subscriber/store-email-as-id-in-cookie REST API route stores
+	 * the subscriber ID in a cookie when a valid email address is given.
+	 *
+	 * @since   3.1.7
+	 */
+	public function testStoreEmailAsIDInCookie()
+	{
+		// Build request.
+		$request = new \WP_REST_Request( 'POST', '/kit/v1/subscriber/store-email-as-id-in-cookie' );
+		$request->set_header( 'Content-Type', 'application/json' );
+		$request->set_body_params(
+			[
+				'email' => $_ENV['CONVERTKIT_API_SUBSCRIBER_EMAIL'],
+			],
+		);
+
+		// Send request.
+		$response = rest_get_server()->dispatch( $request );
+
+		// Assert response is successful.
+		$this->assertSame( 200, $response->get_status() );
+
+		// Assert response data has the expected keys and data.
+		$data = $response->get_data();
+		$this->assertIsArray( $data );
+		$this->assertEquals( (int) $_ENV['CONVERTKIT_API_SUBSCRIBER_ID'], (int) $data['id'] );
+	}
+}
diff --git a/tests/Integration/RESTAPITest.php b/tests/Integration/RESTAPITest.php
index e84ce8c4d..ff085d920 100644
--- a/tests/Integration/RESTAPITest.php
+++ b/tests/Integration/RESTAPITest.php
@@ -306,222 +306,6 @@ public function testRefreshResourcesRestrictContent()
 		$this->assertArrayHasKeys( $data['products'][0], [ 'id', 'name', 'url', 'published' ] );
 	}
 
-	/**
-	 * Test that the /wp-json/kit/v1/restrict-content/subscriber-authentication REST API route when
-	 * requesting the subscriber authentication email to be sent for a given Form ID and subscriber
-	 *
-	 * @since   3.1.0
-	 */
-	public function testRestrictContentSubscriberAuthenticationForm()
-	{
-		// Create a Post.
-		$post_id = static::factory()->post->create( [ 'post_title' => 'Test Post' ] );
-
-		// Build request.
-		$request = new \WP_REST_Request( 'POST', '/kit/v1/restrict-content/subscriber-authentication' );
-		$request->set_header( 'Content-Type', 'application/x-www-form-urlencoded' );
-		$request->set_body_params(
-			[
-				'convertkit_email'         => $_ENV['CONVERTKIT_API_SUBSCRIBER_EMAIL'],
-				'convertkit_resource_type' => 'form',
-				'convertkit_resource_id'   => $_ENV['CONVERTKIT_API_FORM_ID'],
-				'convertkit_post_id'       => $post_id,
-			]
-		);
-
-		// Send request.
-		$response = rest_get_server()->dispatch( $request );
-
-		// Assert response is successful.
-		$this->assertSame( 200, $response->get_status() );
-
-		// Assert response data has the expected keys and data.
-		$data = $response->get_data();
-		$this->assertIsArray( $data );
-		$this->assertTrue( $data['success'] );
-		$this->assertArrayHasKey( 'data', $data );
-	}
-
-	/**
-	 * Test that the /wp-json/kit/v1/restrict-content/subscriber-authentication REST API route when
-	 * requesting the subscriber authentication email to be sent for a given Form ID and an invalid subscriber email is given
-	 *
-	 * @since   3.1.0
-	 */
-	public function testRestrictContentSubscriberAuthenticationFormInvalidEmail()
-	{
-		// Create a Post.
-		$post_id = static::factory()->post->create( [ 'post_title' => 'Test Post' ] );
-
-		// Build request.
-		$request = new \WP_REST_Request( 'POST', '/kit/v1/restrict-content/subscriber-authentication' );
-		$request->set_header( 'Content-Type', 'application/x-www-form-urlencoded' );
-		$request->set_body_params(
-			[
-				'convertkit_email'         => 'fail@kit.com',
-				'convertkit_resource_type' => 'form',
-				'convertkit_resource_id'   => $_ENV['CONVERTKIT_API_FORM_ID'],
-				'convertkit_post_id'       => $post_id,
-			]
-		);
-
-		// Send request.
-		$response = rest_get_server()->dispatch( $request );
-
-		// Assert response is successful.
-		$this->assertSame( 200, $response->get_status() );
-
-		// Assert response data has the expected keys and data.
-		$data = $response->get_data();
-		$this->assertIsArray( $data );
-		$this->assertFalse( $data['success'] );
-		$this->assertArrayHasKey( 'data', $data );
-	}
-
-	/**
-	 * Test that the /wp-json/kit/v1/restrict-content/subscriber-authentication REST API route when
-	 * requesting the subscriber authentication email to be sent for a given Tag ID and subscriber
-	 *
-	 * @since   3.1.0
-	 */
-	public function testRestrictContentSubscriberAuthenticationTag()
-	{
-		// Create a Post.
-		$post_id = static::factory()->post->create( [ 'post_title' => 'Test Post' ] );
-
-		// Build request.
-		$request = new \WP_REST_Request( 'POST', '/kit/v1/restrict-content/subscriber-authentication' );
-		$request->set_header( 'Content-Type', 'application/x-www-form-urlencoded' );
-		$request->set_body_params(
-			[
-				'convertkit_email'         => $_ENV['CONVERTKIT_API_SUBSCRIBER_EMAIL'],
-				'convertkit_resource_type' => 'tag',
-				'convertkit_resource_id'   => $_ENV['CONVERTKIT_API_TAG_ID'],
-				'convertkit_post_id'       => $post_id,
-			]
-		);
-
-		// Send request.
-		$response = rest_get_server()->dispatch( $request );
-
-		// Assert response is successful.
-		$this->assertSame( 200, $response->get_status() );
-
-		// Assert response data has the expected keys and data.
-		$data = $response->get_data();
-		$this->assertIsArray( $data );
-		$this->assertTrue( $data['success'] );
-		$this->assertArrayHasKey( 'data', $data );
-	}
-
-	/**
-	 * Test that the /wp-json/kit/v1/restrict-content/subscriber-authentication REST API route when
-	 * requesting the subscriber authentication email to be sent for a given Tag ID and an invalid subscriber email is given
-	 *
-	 * @since   3.1.0
-	 */
-	public function testRestrictContentSubscriberAuthenticationTagInvalidEmail()
-	{
-		// Create a Post.
-		$post_id = static::factory()->post->create( [ 'post_title' => 'Test Post' ] );
-
-		// Build request.
-		$request = new \WP_REST_Request( 'POST', '/kit/v1/restrict-content/subscriber-authentication' );
-		$request->set_header( 'Content-Type', 'application/x-www-form-urlencoded' );
-		$request->set_body_params(
-			[
-				'convertkit_email'         => 'fail@kit.com',
-				'convertkit_resource_type' => 'tag',
-				'convertkit_resource_id'   => $_ENV['CONVERTKIT_API_TAG_ID'],
-				'convertkit_post_id'       => $post_id,
-			]
-		);
-
-		// Send request.
-		$response = rest_get_server()->dispatch( $request );
-
-		// Assert response is successful.
-		$this->assertSame( 200, $response->get_status() );
-
-		// Assert response data has the expected keys and data.
-		$data = $response->get_data();
-		$this->assertIsArray( $data );
-		$this->assertFalse( $data['success'] );
-		$this->assertArrayHasKey( 'data', $data );
-	}
-
-	/**
-	 * Test that the /wp-json/kit/v1/restrict-content/subscriber-authentication REST API route when
-	 * requesting the subscriber authentication email to be sent for a given Product ID and subscriber
-	 *
-	 * @since   3.1.0
-	 */
-	public function testRestrictContentSubscriberAuthenticationProduct()
-	{
-		// Create a Post.
-		$post_id = static::factory()->post->create( [ 'post_title' => 'Test Post' ] );
-
-		// Build request.
-		$request = new \WP_REST_Request( 'POST', '/kit/v1/restrict-content/subscriber-authentication' );
-		$request->set_header( 'Content-Type', 'application/x-www-form-urlencoded' );
-		$request->set_body_params(
-			[
-				'convertkit_email'         => $_ENV['CONVERTKIT_API_SUBSCRIBER_EMAIL'],
-				'convertkit_resource_type' => 'product',
-				'convertkit_resource_id'   => $_ENV['CONVERTKIT_API_PRODUCT_ID'],
-				'convertkit_post_id'       => $post_id,
-			]
-		);
-
-		// Send request.
-		$response = rest_get_server()->dispatch( $request );
-
-		// Assert response is successful.
-		$this->assertSame( 200, $response->get_status() );
-
-		// Assert response data has the expected keys and data.
-		$data = $response->get_data();
-		$this->assertIsArray( $data );
-		$this->assertTrue( $data['success'] );
-		$this->assertArrayHasKey( 'data', $data );
-	}
-
-	/**
-	 * Test that the /wp-json/kit/v1/restrict-content/subscriber-authentication REST API route when
-	 * requesting the subscriber authentication email to be sent for a given Product ID and an invalid subscriber email is given
-	 *
-	 * @since   3.1.0
-	 */
-	public function testRestrictContentSubscriberAuthenticationProductInvalidEmail()
-	{
-		// Create a Post.
-		$post_id = static::factory()->post->create( [ 'post_title' => 'Test Post' ] );
-
-		// Build request.
-		$request = new \WP_REST_Request( 'POST', '/kit/v1/restrict-content/subscriber-authentication' );
-		$request->set_header( 'Content-Type', 'application/x-www-form-urlencoded' );
-		$request->set_body_params(
-			[
-				'convertkit_email'         => 'fail@kit.com',
-				'convertkit_resource_type' => 'product',
-				'convertkit_resource_id'   => $_ENV['CONVERTKIT_API_PRODUCT_ID'],
-				'convertkit_post_id'       => $post_id,
-			]
-		);
-
-		// Send request.
-		$response = rest_get_server()->dispatch( $request );
-
-		// Assert response is successful.
-		$this->assertSame( 200, $response->get_status() );
-
-		// Assert response data has the expected keys and data.
-		$data = $response->get_data();
-		$this->assertIsArray( $data );
-		$this->assertFalse( $data['success'] );
-		$this->assertArrayHasKey( 'data', $data );
-	}
-
 	/**
 	 * Test that the /wp-json/kit/v1/subscriber/store-email-as-id-in-cookie REST API route stores
 	 * the subscriber ID in a cookie when a valid email address is given.