diff --git a/convertkit-membermouse.php b/convertkit-membermouse.php
index 24e5c44..9758e34 100644
--- a/convertkit-membermouse.php
+++ b/convertkit-membermouse.php
@@ -15,7 +15,7 @@
  * Plugin Name:       Kit (formerly ConvertKit) for MemberMouse
  * Plugin URI:        http://www.kit.com
  * Description:       This plugin integrates Kit with MemberMouse.
- * Version:           1.3.6
+ * Version:           1.3.7
  * Author:            Kit
  * Author URI:        https://kit.com
  * License:           GPLv3 or later
@@ -34,7 +34,7 @@
 define( 'CONVERTKIT_MM_FILE', plugin_basename( __FILE__ ) );
 define( 'CONVERTKIT_MM_URL', plugin_dir_url( __FILE__ ) );
 define( 'CONVERTKIT_MM_PATH', plugin_dir_path( __FILE__ ) );
-define( 'CONVERTKIT_MM_VERSION', '1.3.6' );
+define( 'CONVERTKIT_MM_VERSION', '1.3.7' );
 define( 'CONVERTKIT_MM_OAUTH_CLIENT_ID', 'U4aHnnj_QgRrZOdtWUJ6vtpulZSloLKn-7e551T-Exw' );
 define( 'CONVERTKIT_MM_OAUTH_CLIENT_REDIRECT_URI', 'https://app.kit.com/wordpress/redirect' );
 
diff --git a/languages/convertkit-mm.pot b/languages/convertkit-mm.pot
index 97cada1..9d1d8f6 100644
--- a/languages/convertkit-mm.pot
+++ b/languages/convertkit-mm.pot
@@ -2,14 +2,14 @@
 # This file is distributed under the GPLv3 or later.
 msgid ""
 msgstr ""
-"Project-Id-Version: Kit (formerly ConvertKit) for MemberMouse 1.3.6\n"
+"Project-Id-Version: Kit (formerly ConvertKit) for MemberMouse 1.3.7\n"
 "Report-Msgid-Bugs-To: https://wordpress.org/support/plugin/convertkit-membermouse\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"POT-Creation-Date: 2025-12-03T01:30:46+00:00\n"
+"POT-Creation-Date: 2025-12-11T08:20:25+00:00\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "X-Generator: WP-CLI 2.12.0\n"
 "X-Domain: convertkit-mm\n"
@@ -39,162 +39,170 @@ msgstr ""
 msgid "https://kit.com"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:328
+#: admin/class-convertkit-mm-admin.php:327
 msgid "Connect to Kit"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:332
+#: admin/class-convertkit-mm-admin.php:331
 msgid "For the Kit for MemberMouse Plugin to function, please connect your Kit account using the button below."
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:344
+#: admin/class-convertkit-mm-admin.php:343
 msgid "General"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:350
+#: admin/class-convertkit-mm-admin.php:349
 msgid "Account Name"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:357
+#: admin/class-convertkit-mm-admin.php:356
 msgid "Debug"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:365
+#: admin/class-convertkit-mm-admin.php:364
 msgid "Log requests to file and output browser console messages."
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:368
+#: admin/class-convertkit-mm-admin.php:367
 msgid "You can ignore this unless you're working with our support team to resolve an issue. Uncheck this option to improve performance."
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:426
+#: admin/class-convertkit-mm-admin.php:425
 msgid "Custom Fields"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:432
+#: admin/class-convertkit-mm-admin.php:431
 msgid "The Kit custom fields to store MemberMouse data."
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:438
+#: admin/class-convertkit-mm-admin.php:437
 msgid "Send Last Name"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:464
+#: admin/class-convertkit-mm-admin.php:463
 msgid "For each MemberMouse membership level, assign a Kit Tag that you wish to be assigned to members of that level."
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:466
+#: admin/class-convertkit-mm-admin.php:465
 msgid "No membership levels exist in MemberMouse. Add a membership level first, and then reload this settings screen to assign tags to members by membership level."
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:472
+#: admin/class-convertkit-mm-admin.php:471
 msgid "Tagging: Membership Levels"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:497
+#: admin/class-convertkit-mm-admin.php:496
 msgid "Level"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:524
+#: admin/class-convertkit-mm-admin.php:523
 msgid "For each MemberMouse product, assign a Kit Tag that you wish to be assigned to members of that product."
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:526
+#: admin/class-convertkit-mm-admin.php:525
 msgid "No products exist in MemberMouse. Add a product first, and then reload this settings screen to assign tags to members of products."
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:531
+#: admin/class-convertkit-mm-admin.php:530
 msgid "Tagging: Products"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:556
+#: admin/class-convertkit-mm-admin.php:555
 msgid "Product"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:580
+#: admin/class-convertkit-mm-admin.php:579
 msgid "For each MemberMouse bundle, assign a Kit Tag that you wish to be assigned to members of that bundle."
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:582
+#: admin/class-convertkit-mm-admin.php:581
 msgid "No bundles exist in MemberMouse. Add a bundle first, and then reload this settings screen to assign tags to members of bundles."
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:588
+#: admin/class-convertkit-mm-admin.php:587
 msgid "Tagging: Bundles"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:613
+#: admin/class-convertkit-mm-admin.php:612
 msgid "Bundle"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:637
+#: admin/class-convertkit-mm-admin.php:636
 msgid "Kit MemberMouse Settings"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:638
+#: admin/class-convertkit-mm-admin.php:637
 msgid "Kit MemberMouse"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:656
+#: admin/class-convertkit-mm-admin.php:655
 msgid "Kit for MemberMouse"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:664
+#: admin/class-convertkit-mm-admin.php:663
 msgid "Help"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:684
+#: admin/class-convertkit-mm-admin.php:683
 msgid "Connect"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:688
+#: admin/class-convertkit-mm-admin.php:687
 msgid "Save Settings"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:700
+#: admin/class-convertkit-mm-admin.php:699
 msgid "If you need help setting up the plugin please refer to the"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:702
+#: admin/class-convertkit-mm-admin.php:701
 msgid "plugin documentation"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:742
+#: admin/class-convertkit-mm-admin.php:741
 msgid "(Not specified)"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:757
+#: admin/class-convertkit-mm-admin.php:756
 msgid "Disconnect"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:842
+#: admin/class-convertkit-mm-admin.php:841
 msgid "Apply tag on add"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:855
+#: admin/class-convertkit-mm-admin.php:854
 msgid "Apply / remove tag on cancel"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:927
+#: admin/class-convertkit-mm-admin.php:926
 msgid "(None)"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:933
+#: admin/class-convertkit-mm-admin.php:932
 msgid "Assign Tag"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:949
+#: admin/class-convertkit-mm-admin.php:948
 msgid "Remove Tag"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:957
+#: admin/class-convertkit-mm-admin.php:956
 msgid "Remove"
 msgstr ""
 
-#: admin/class-convertkit-mm-admin.php:1040
+#: admin/class-convertkit-mm-admin.php:1039
 msgid "Settings"
 msgstr ""
 
+#: includes/class-convertkit-mm-admin-notices.php:64
+msgid "Kit for MemberMouse: Authorization failed. Please"
+msgstr ""
+
+#: includes/class-convertkit-mm-admin-notices.php:68
+msgid "connect your Kit account."
+msgstr ""
+
 #: includes/class-convertkit-mm-api.php:71
 msgid "form_subscribe(): the form_id parameter is empty."
 msgstr ""
@@ -320,11 +328,11 @@ msgid "Kit API Error: The response is not of the expected type array."
 msgstr ""
 
 #. translators: %1$s: PHP class name
-#: includes/class-convertkit-mm.php:157
+#: includes/class-convertkit-mm.php:158
 #, php-format
 msgid "Kit for MemberMouse Error: Could not load Plugin class <strong>%1$s</strong>"
 msgstr ""
 
-#: includes/class-convertkit-mm.php:167
+#: includes/class-convertkit-mm.php:168
 msgid "Kit for MemberMouse Error"
 msgstr ""
diff --git a/readme.txt b/readme.txt
index 535b266..2069611 100644
--- a/readme.txt
+++ b/readme.txt
@@ -5,7 +5,7 @@ Tags: convertkit, email, marketing, membermouse
 Requires at least: 5.0
 Tested up to: 6.9
 Requires PHP: 7.1
-Stable tag: 1.3.6
+Stable tag: 1.3.7
 License: GPLv3 or later
 License URI: https://www.gnu.org/licenses/gpl-3.0.html
 
@@ -40,8 +40,10 @@ No. You must first have an account on [kit.com](https://kit.com?utm_source=wordp
 
 == Changelog ==
 
+### 1.3.7 2025-12-11
+* Fix: Settings: Improve logic to automatically delete invalid Access Tokens
+
 ### 1.3.6 2025-12-03
-* Fix: Settings: Disconnect: Remove cached Custom Fields and Sequences
 * Updated: Use WordPress Libraries 2.1.2
 
 ### 1.3.5 2025-11-20