← All changes | includes/functions.php +483 -33 2.3.2 → trunk View file →

		@@ -16,8 +16,9 @@
16	16	function convertkit_plugin_activate( $network_wide ) {
17	17
18	18	// Initialise Plugin.
19	19	$convertkit = WP_ConvertKit();
	20	+ $convertkit->initialize();
20	21
21	22	// Check if we are on a multisite install, activating network wide, or a single install.
22	23	if ( ! is_multisite() || ! $network_wide ) {
23	24	// Single Site activation.
		@@ -57,8 +58,9 @@
57	58	}
58	59
59	60	// Initialise Plugin.
60	61	$convertkit = WP_ConvertKit();
	62	+ $convertkit->initialize();
61	63
62	64	// Run installation routine.
63	65	switch_to_blog( $site_or_blog_id );
64	66	$convertkit->get_class( 'setup' )->activate();
		@@ -76,8 +78,9 @@
76	78	function convertkit_plugin_deactivate( $network_wide ) {
77	79
78	80	// Initialise Plugin.
79	81	$convertkit = WP_ConvertKit();
	82	+ $convertkit->initialize();
80	83
81	84	// Check if we are on a multisite install, activating network wide, or a single install.
82	85	if ( ! is_multisite() || ! $network_wide ) {
83	86	// Single Site activation.
		@@ -106,13 +109,32 @@
106	109	* @return array Post Types
107	110	*/
108	111	function convertkit_get_supported_post_types() {
109	112
	113	+ // Define supported Post Types.
110	114	$post_types = array(
111	115	'page',
112	116	'post',
113	117	);
114	118
	119	+ // If public Custom Post Types can be fetched, include them now.
	120	+ if ( function_exists( 'get_post_types' ) ) {
	121	+ // Get public Custom Post Types.
	122	+ $custom_post_types = (array) get_post_types(
	123	+ array(
	124	+ 'public' => true,
	125	+
	126	+ // Don't include WordPress' built in Post Types, such as attachment, revisino and nav_menu_item.
	127	+ '_builtin' => false,
	128	+ )
	129	+ );
	130	+
	131	+ $post_types = array_merge(
	132	+ $post_types,
	133	+ array_keys( $custom_post_types )
	134	+ );
	135	+ }
	136	+
115	137	/**
116	138	* Defines the Post Types that support ConvertKit Forms.
117	139	*
118	140	* @since 1.9.6
		@@ -125,32 +147,40 @@
125	147
126	148	}
127	149
128	150	/**
	151	+ * Determines whether the current user can create and publish the given Post Type.
	152	+ *
	153	+ * @since 3.3.9
	154	+ *
	155	+ * @param string $post_type Post Type.
	156	+ * @return bool User can create and publish Post Type.
	157	+ */
	158	+function convertkit_user_can_create_published_post_type( $post_type ) {
	159	+
	160	+ $post_type_object = get_post_type_object( $post_type );
	161	+
	162	+ if ( ! $post_type_object ) {
	163	+ return false;
	164	+ }
	165	+
	166	+ return current_user_can( $post_type_object->cap->create_posts ) && current_user_can( $post_type_object->cap->publish_posts );
	167	+
	168	+}
	169	+
	170	+/**
129	171	* Helper method to get supported Post Types for Restricted Content (Member's Content)
130	172	*
131	173	* @since 2.1.0
132	174	*
	175	+ * @deprecated 2.4.3 No longer used by internal code and not recommended. Use `convertkit_get_supported_post_types` instead.
	176	+ *
133	177	* @return array Post Types
134	178	*/
135	179	function convertkit_get_supported_restrict_content_post_types() {
136	180
137		- $post_types = array(
138		- 'page',
139		- 'post',
140		- );
	181	+ return convertkit_get_supported_post_types();
141	182
142		- /**
143		- * Defines the Post Types that support Restricted Content / Members Content functionality.
144		- *
145		- * @since 2.0.0
146		- *
147		- * @param array $post_types Post Types
148		- */
149		- $post_types = apply_filters( 'convertkit_get_supported_restrict_content_post_types', $post_types );
150		-
151		- return $post_types;
152		-
153	183	}
154	184
155	185	/**
156	186	* Helper method to get registered Shortcodes.
		@@ -224,8 +254,105 @@
224	254
225	255	}
226	256
227	257	/**
	258	+ * Helper method to get registered plugin sidebars.
	259	+ *
	260	+ * @since 3.3.0
	261	+ *
	262	+ * @return array Plugin sidebars
	263	+ */
	264	+function convertkit_get_plugin_sidebars() {
	265	+
	266	+ $plugin_sidebars = array();
	267	+
	268	+ /**
	269	+ * Registers plugin sidebars for the WordPress block editor.
	270	+ *
	271	+ * @since 3.3.0
	272	+ *
	273	+ * @param array $plugin_sidebars Plugin sidebars.
	274	+ */
	275	+ $plugin_sidebars = apply_filters( 'convertkit_plugin_sidebars', $plugin_sidebars );
	276	+
	277	+ return $plugin_sidebars;
	278	+
	279	+}
	280	+
	281	+/**
	282	+ * Helper method to get registered pre-publish actions.
	283	+ *
	284	+ * @since 2.4.0
	285	+ *
	286	+ * @return array Pre-publish actions
	287	+ */
	288	+function convertkit_get_pre_publish_actions() {
	289	+
	290	+ $pre_publish_actions = array();
	291	+
	292	+ /**
	293	+ * Registers pre-publish actions for the ConvertKit Plugin.
	294	+ *
	295	+ * @since 2.4.0
	296	+ *
	297	+ * @param array $pre_publish_panels Pre-publish actions.
	298	+ */
	299	+ $pre_publish_actions = apply_filters( 'convertkit_get_pre_publish_actions', $pre_publish_actions );
	300	+
	301	+ return $pre_publish_actions;
	302	+
	303	+}
	304	+
	305	+/**
	306	+ * Helper method to get registered importers that can replace third party
	307	+ * form shortcodes and blocks with Kit form shortcodes and blocks.
	308	+ *
	309	+ * @since 3.1.7
	310	+ *
	311	+ * @return array Importers.
	312	+ */
	313	+function convertkit_get_form_importers() {
	314	+
	315	+ $importers = array();
	316	+
	317	+ /**
	318	+ * Registers form importers for the ConvertKit Plugin.
	319	+ *
	320	+ * @since 3.1.7
	321	+ *
	322	+ * @param array $importers Importers.
	323	+ */
	324	+ $importers = apply_filters( 'convertkit_get_form_importers', $importers );
	325	+
	326	+ return $importers;
	327	+
	328	+}
	329	+
	330	+/**
	331	+ * Helper method to get registered abilities.
	332	+ *
	333	+ * @since 3.4.0
	334	+ *
	335	+ * @return array Abilities.
	336	+ */
	337	+function convertkit_get_abilities() {
	338	+
	339	+ $abilities = array();
	340	+
	341	+ /**
	342	+ * Registers abilities for the Kit Plugin.
	343	+ *
	344	+ * @since 3.4.0
	345	+ *
	346	+ * @param array $abilities Abilities.
	347	+ */
	348	+ $abilities = apply_filters( 'convertkit_abilities', $abilities );
	349	+
	350	+ return $abilities;
	351	+
	352	+}
	353	+
	354	+/**
228	355	* Helper method to return the Plugin Settings Link
229	356	*
230	357	* @since 1.9.6
231	358	*
		@@ -280,9 +407,9 @@
280	407	'utm_source' => 'wordpress',
281	408	'utm_term' => get_locale(),
282	409	'utm_content' => 'convertkit',
283	410	),
284		- 'https://app.convertkit.com/users/signup'
	411	+ 'https://app.kit.com/users/signup'
285	412	);
286	413
287	414	}
288	415
		@@ -300,9 +427,9 @@
300	427	'utm_source' => 'wordpress',
301	428	'utm_term' => get_locale(),
302	429	'utm_content' => 'convertkit',
303	430	),
304		- 'https://app.convertkit.com/'
	431	+ 'https://app.kit.com/'
305	432	);
306	433
307	434	}
308	435
		@@ -320,21 +447,21 @@
320	447	'utm_source' => 'wordpress',
321	448	'utm_term' => get_locale(),
322	449	'utm_content' => 'convertkit',
323	450	),
324		- 'https://app.convertkit.com/account_settings/billing/'
	451	+ 'https://app.kit.com/account_settings/billing/'
325	452	);
326	453
327	454	}
328	455
329	456	/**
330		- * Helper method to return the URL the user needs to visit on the ConvertKit app to obtain their API Key and Secret.
	457	+ * Helper method to return the URL the user needs to visit on the ConvertKit app to create a new Form or Landing Page.
331	458	*
332		- * @since 1.9.6.1
	459	+ * @since 2.2.3
333	460	*
334		- * @return string ConvertKit App URL.
	461	+ * @return string ConvertKit App URL
335	462	*/
336		-function convertkit_get_api_key_url() {
	463	+function convertkit_get_new_form_url() {
337	464
338	465	return add_query_arg(
339	466	array(
340	467	'utm_source' => 'wordpress',
		@@ -340,21 +467,41 @@
340	467	'utm_source' => 'wordpress',
341	468	'utm_term' => get_locale(),
342	469	'utm_content' => 'convertkit',
343	470	),
344		- 'https://app.convertkit.com/account_settings/advanced_settings/'
	471	+ 'https://app.kit.com/forms/new/'
345	472	);
346	473
347	474	}
348	475
349	476	/**
350		- * Helper method to return the URL the user needs to visit on the ConvertKit app to create a new Form or Landing Page.
	477	+ * Helper method to return the URL the user needs to visit to edit ConvertKit forms.
351	478	*
352	479	* @since 2.2.3
353	480	*
	481	+ * @return string ConvertKit Form Editor URL.
	482	+ */
	483	+function convertkit_get_form_editor_url() {
	484	+
	485	+ return add_query_arg(
	486	+ array(
	487	+ 'utm_source' => 'wordpress',
	488	+ 'utm_term' => get_locale(),
	489	+ 'utm_content' => 'convertkit',
	490	+ ),
	491	+ 'https://app.kit.com/forms'
	492	+ );
	493	+
	494	+}
	495	+
	496	+/**
	497	+ * Helper method to return the URL the user needs to visit on the ConvertKit app to create a new Landing Page.
	498	+ *
	499	+ * @since 2.5.5
	500	+ *
354	501	* @return string ConvertKit App URL
355	502	*/
356		-function convertkit_get_new_form_url() {
	503	+function convertkit_get_new_landing_page_url() {
357	504
358	505	return add_query_arg(
359	506	array(
360	507	'utm_source' => 'wordpress',
		@@ -360,21 +507,21 @@
360	507	'utm_source' => 'wordpress',
361	508	'utm_term' => get_locale(),
362	509	'utm_content' => 'convertkit',
363	510	),
364		- 'https://app.convertkit.com/forms/new/'
	511	+ 'https://app.kit.com/pages/new/'
365	512	);
366	513
367	514	}
368	515
369	516	/**
370		- * Helper method to return the URL the user needs to visit to edit ConvertKit forms.
	517	+ * Helper method to return the URL the user needs to visit on the ConvertKit app to create a new Tag.
371	518	*
372		- * @since 2.2.3
	519	+ * @since 2.3.3
373	520	*
374		- * @return string ConvertKit Form Editor URL.
	521	+ * @return string ConvertKit App URL.
375	522	*/
376		-function convertkit_get_form_editor_url() {
	523	+function convertkit_get_new_tag_url() {
377	524
378	525	return add_query_arg(
379	526	array(
380	527	'utm_source' => 'wordpress',
		@@ -380,9 +527,9 @@
380	527	'utm_source' => 'wordpress',
381	528	'utm_term' => get_locale(),
382	529	'utm_content' => 'convertkit',
383	530	),
384		- 'https://app.convertkit.com/forms'
	531	+ 'https://app.kit.com/subscribers/'
385	532	);
386	533
387	534	}
388	535
		@@ -400,14 +547,38 @@
400	547	'utm_source' => 'wordpress',
401	548	'utm_term' => get_locale(),
402	549	'utm_content' => 'convertkit',
403	550	),
404		- 'https://app.convertkit.com/campaigns/'
	551	+ 'https://app.kit.com/campaigns/'
405	552	);
406	553
407	554	}
408	555
409	556	/**
	557	+ * Helper method to return the URL the user needs to visit on the ConvertKit app to edit a draft Broadcast.
	558	+ *
	559	+ * @since 2.4.0
	560	+ *
	561	+ * @param int $broadcast_id ConvertKit Broadcast ID.
	562	+ * @return string ConvertKit App URL.
	563	+ */
	564	+function convertkit_get_edit_broadcast_url( $broadcast_id ) {
	565	+
	566	+ return add_query_arg(
	567	+ array(
	568	+ 'utm_source' => 'wordpress',
	569	+ 'utm_term' => get_locale(),
	570	+ 'utm_content' => 'convertkit',
	571	+ ),
	572	+ sprintf(
	573	+ 'https://app.kit.com/campaigns/%s/draft',
	574	+ $broadcast_id
	575	+ )
	576	+ );
	577	+
	578	+}
	579	+
	580	+/**
410	581	* Helper method to return the URL the user needs to visit on the ConvertKit app to create a new Product.
411	582	*
412	583	* @since 2.2.3
413	584	*
		@@ -420,14 +591,42 @@
420	591	'utm_source' => 'wordpress',
421	592	'utm_term' => get_locale(),
422	593	'utm_content' => 'convertkit',
423	594	),
424		- 'https://app.convertkit.com/products/new/'
	595	+ 'https://app.kit.com/products/new/'
425	596	);
426	597
427	598	}
428	599
429	600	/**
	601	+ * Helper method to enqueue the frontend CSS file.
	602	+ *
	603	+ * @since 3.2.0
	604	+ */
	605	+function convertkit_enqueue_frontend_css() {
	606	+
	607	+ wp_enqueue_style( 'convertkit-frontend', CONVERTKIT_PLUGIN_URL . 'resources/frontend/css/frontend.css', array(), CONVERTKIT_PLUGIN_VERSION );
	608	+
	609	+}
	610	+
	611	+/**
	612	+ * Helper method to enqueue the frontend JS file.
	613	+ *
	614	+ * @since 3.2.0
	615	+ */
	616	+function convertkit_enqueue_frontend_js() {
	617	+
	618	+ wp_enqueue_script(
	619	+ 'convertkit-js',
	620	+ CONVERTKIT_PLUGIN_URL . 'resources/frontend/js/dist/frontend.min.js',
	621	+ array(),
	622	+ CONVERTKIT_PLUGIN_VERSION,
	623	+ true
	624	+ );
	625	+
	626	+}
	627	+
	628	+/**
430	629	* Helper method to enqueue Select2 scripts for use within the ConvertKit Plugin.
431	630	*
432	631	* @since 1.9.6.4
433	632	*/
		@@ -476,4 +675,255 @@
476	675	// Return file's contents.
477	676	return $contents;
478	677
479	678	}
	679	+
	680	+/**
	681	+ * Returns a dropdown field commonly used for settings, comprising of:
	682	+ * - Do not subscribe
	683	+ * - Subscribe
	684	+ * - Subscribe to Form
	685	+ *
	686	+ * @since 2.5.2
	687	+ *
	688	+ * @param string $name Field name.
	689	+ * @param string $value Field value.
	690	+ * @param string $id Field ID attribute.
	691	+ * @param string $css_class Field CSS class(es).
	692	+ * @param string $context Resource context.
	693	+ * @param bool|array $additional_options Additional <option> key/value pairs.
	694	+ */
	695	+function convertkit_get_subscription_dropdown_field( $name, $value, $id, $css_class = '', $context = '', $additional_options = false ) { // phpcs:ignore Generic.CodeAnalysis.UnusedFunctionParameter
	696	+
	697	+ // Load resource classes.
	698	+ $forms = new ConvertKit_Resource_Forms( $context );
	699	+ $tags = new ConvertKit_Resource_Tags( $context );
	700	+ $sequences = new ConvertKit_Resource_Sequences( $context );
	701	+
	702	+ ob_start();
	703	+ include CONVERTKIT_PLUGIN_PATH . '/views/backend/subscription-dropdown-field.php';
	704	+ $output = trim( ob_get_clean() );
	705	+
	706	+ // Return output.
	707	+ return $output;
	708	+
	709	+}
	710	+
	711	+/**
	712	+ * Helper method to safely call get_current_screen(), returning false
	713	+ * if the function is not available or returns null.
	714	+ *
	715	+ * Otherwise returns the given WP_Screen property.
	716	+ *
	717	+ * @since 2.5.9
	718	+ *
	719	+ * @param string $property WP_Screen property to return.
	720	+ * @return bool|string
	721	+ */
	722	+function convertkit_get_current_screen( $property ) {
	723	+
	724	+ // Bail if we cannot determine the screen.
	725	+ if ( ! function_exists( 'get_current_screen' ) ) {
	726	+ return false;
	727	+ }
	728	+
	729	+ // Get screen.
	730	+ $screen = get_current_screen();
	731	+
	732	+ // Bail if the screen couldn't be determined.
	733	+ if ( is_null( $screen ) ) {
	734	+ return false;
	735	+ }
	736	+
	737	+ // Return property.
	738	+ return $screen->$property;
	739	+
	740	+}
	741	+
	742	+/**
	743	+ * Outputs the Intercom help widget script.
	744	+ *
	745	+ * @since 2.7.2
	746	+ */
	747	+function convertkit_output_intercom_messenger() {
	748	+
	749	+ ?>
	750	+ <script>
	751	+ const KIT_INTERCOM_APP_ID = 'e4n3xtxz';
	752	+ window.intercomSettings = {
	753	+ api_base: 'https://api-iam.intercom.io',
	754	+ app_id: KIT_INTERCOM_APP_ID
	755	+ };
	756	+ </script>
	757	+
	758	+ <script>
	759	+ (function(){var w=window;var ic=w.Intercom;if(typeof ic==="function"){ic('update',w.intercomSettings);}else{var d=document;var i=function(){i.c(arguments);};i.q=[];i.c=function(args){i.q.push(args);};w.Intercom=i;var l=function(){var s=d.createElement('script');s.type='text/javascript';s.async=true;s.src='https://widget.intercom.io/widget/' + KIT_INTERCOM_APP_ID;var x=d.getElementsByTagName('script')[0];x.parentNode.insertBefore(s, x);};if(document.readyState==='complete'){l();}else if(w.attachEvent){w.attachEvent('onload',l);}else{w.addEventListener('load',l,false);}}})();
	760	+ </script>
	761	+ <?php
	762	+
	763	+}
	764	+
	765	+/**
	766	+ * Checks if the given Theme is active.
	767	+ *
	768	+ * @since 3.1.4
	769	+ *
	770	+ * @param string $theme_name Theme name.
	771	+ * @return bool
	772	+ */
	773	+function convertkit_is_theme_active( $theme_name ) {
	774	+
	775	+ // Assume Theme isn't active if we can't detect it.
	776	+ if ( ! function_exists( 'wp_get_theme' ) ) {
	777	+ return false;
	778	+ }
	779	+
	780	+ // Check the Parent Theme if we're on a Child Theme.
	781	+ if ( wp_get_theme()->parent() ) {
	782	+ $theme = wp_get_theme()->parent();
	783	+ } else {
	784	+ $theme = wp_get_theme();
	785	+ }
	786	+
	787	+ return strtolower( $theme->get( 'Name' ) ) === strtolower( $theme_name );
	788	+
	789	+}
	790	+
	791	+/**
	792	+ * Returns permitted HTML output when using wp_kses( ..., convertkit_kses_allowed_html()).
	793	+ *
	794	+ * @since 2.8.5
	795	+ */
	796	+function convertkit_kses_allowed_html() {
	797	+
	798	+ // Get WordPress' permitted HTML elements.
	799	+ $elements = wp_kses_allowed_html( 'post' );
	800	+
	801	+ // Add form elements.
	802	+ $form_elements = array(
	803	+ 'input' => array(
	804	+ 'type' => true,
	805	+ 'id' => true,
	806	+ 'name' => true,
	807	+ 'class' => true,
	808	+ 'value' => true,
	809	+ 'checked' => true,
	810	+ 'min' => true,
	811	+ 'max' => true,
	812	+ 'step' => true,
	813	+ 'data-*' => true,
	814	+ ),
	815	+ 'select' => array(
	816	+ 'id' => true,
	817	+ 'name' => true,
	818	+ 'class' => true,
	819	+ 'size' => true,
	820	+ 'multiple' => true,
	821	+ 'data-*' => true,
	822	+ ),
	823	+ 'option' => array(
	824	+ 'value' => true,
	825	+ 'selected' => true,
	826	+ 'data-*' => true,
	827	+ ),
	828	+ 'optgroup' => array(
	829	+ 'label' => true,
	830	+ 'data-*' => true,
	831	+ ),
	832	+ 'label' => array(
	833	+ 'for' => true,
	834	+ ),
	835	+ );
	836	+
	837	+ return array_merge( $elements, $form_elements );
	838	+
	839	+}
	840	+
	841	+/**
	842	+ * Saves the new access token, refresh token and its expiry, and schedules
	843	+ * a WordPress Cron event to refresh the token on expiry.
	844	+ *
	845	+ * @since 3.1.1
	846	+ *
	847	+ * @param array $result New Access Token, Refresh Token and Expiry.
	848	+ * @param string $client_id OAuth Client ID used for the Access and Refresh Tokens.
	849	+ */
	850	+function convertkit_maybe_update_credentials( $result, $client_id ) {
	851	+
	852	+ // Don't save these credentials if they're not for this Client ID.
	853	+ // They're for another Kit Plugin that uses OAuth.
	854	+ if ( $client_id !== CONVERTKIT_OAUTH_CLIENT_ID ) {
	855	+ return;
	856	+ }
	857	+
	858	+ $settings = new ConvertKit_Settings();
	859	+ $settings->update_credentials( $result );
	860	+
	861	+}
	862	+
	863	+/**
	864	+ * Deletes the stored access token, refresh token and its expiry from the Plugin settings,
	865	+ * and clears any existing scheduled WordPress Cron event to refresh the token on expiry,
	866	+ * when the user revokes the access token.
	867	+ *
	868	+ * @since 3.2.4
	869	+ *
	870	+ * @param string $client_id OAuth Client ID used for the Access and Refresh Tokens.
	871	+ */
	872	+function convertkit_delete_credentials( $client_id ) {
	873	+
	874	+ // Don't delete these credentials if they're not for this Client ID.
	875	+ // They're for another Kit Plugin that uses OAuth.
	876	+ if ( $client_id !== CONVERTKIT_OAUTH_CLIENT_ID ) {
	877	+ return;
	878	+ }
	879	+
	880	+ // Delete Access and Refresh Tokens.
	881	+ $settings = new ConvertKit_Settings();
	882	+ $settings->delete_credentials();
	883	+
	884	+}
	885	+
	886	+/**
	887	+ * Deletes the stored access token, refresh token and its expiry from the Plugin settings,
	888	+ * and clears any existing scheduled WordPress Cron event to refresh the token on expiry,
	889	+ * when either:
	890	+ * - The access token is invalid
	891	+ * - The access token expired, and refreshing failed
	892	+ *
	893	+ * @since 3.1.1
	894	+ *
	895	+ * @param WP_Error $result Error result.
	896	+ * @param string $client_id OAuth Client ID used for the Access and Refresh Tokens.
	897	+ */
	898	+function convertkit_maybe_delete_credentials( $result, $client_id ) {
	899	+
	900	+ // Don't save these credentials if they're not for this Client ID.
	901	+ // They're for another Kit Plugin that uses OAuth.
	902	+ if ( $client_id !== CONVERTKIT_OAUTH_CLIENT_ID ) {
	903	+ return;
	904	+ }
	905	+
	906	+ // If the error isn't a 401, don't delete credentials.
	907	+ // This could be e.g. a temporary network error, rate limit or similar.
	908	+ if ( $result->get_error_data( 'convertkit_api_error' ) !== 401 ) {
	909	+ return;
	910	+ }
	911	+
	912	+ // Persist an error notice in the WordPress Administration until the user fixes the problem.
	913	+ WP_ConvertKit()->get_class( 'admin_notices' )->add( 'authorization_failed' );
	914	+
	915	+ $settings = new ConvertKit_Settings();
	916	+ $settings->delete_credentials();
	917	+
	918	+}
	919	+
	920	+// Update Access Token when refreshed by the API class.
	921	+add_action( 'convertkit_api_get_access_token', 'convertkit_maybe_update_credentials', 10, 2 );
	922	+add_action( 'convertkit_api_refresh_token', 'convertkit_maybe_update_credentials', 10, 2 );
	923	+
	924	+// Delete credentials when the user revokes the access and refresh tokens.
	925	+add_action( 'convertkit_api_revoke_tokens', 'convertkit_delete_credentials', 10, 1 );
	926	+
	927	+// Delete credentials if the API class uses a invalid access token.
	928	+// This prevents the Plugin making repetitive API requests that will 401.
	929	+add_action( 'convertkit_api_access_token_invalid', 'convertkit_maybe_delete_credentials', 10, 2 );