{"id":19036743,"date":"2026-10-05T12:29:22","date_gmt":"2026-10-05T12:29:22","guid":{"rendered":"https:\/\/wordpress.org\/support\/topic\/plugin-stoped-working-10\/"},"modified":"2026-10-05T12:29:22","modified_gmt":"2026-10-05T12:29:22","slug":"plugin-stoped-working-10","status":"publish","type":"topic","link":"https:\/\/wordpress.org\/support\/topic\/plugin-stoped-working-10\/","title":{"rendered":"Plugin Stoped working"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Hi,<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Contact Form 7 forms on my WordPress site no longer submit. After clicking Submit, the loading spinner keeps spinning indefinitely.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The REST API request returns:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">POST <code>\/wp-json\/contact-form-7\/v1\/contact-forms\/72437\/feedback<\/code><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">HTTP 400 Bad Request<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Response:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>{\n  \"code\": \"wpcf7_unit_tag_not_found\",\n  \"message\": \"There is no valid unit tag.\",\n  \"data\": {\n    \"status\": 400\n  }\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">The submitted payload does contain a valid-looking unit tag:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>_wpcf7: 72437\n_wpcf7_version: 6.1.7\n_wpcf7_locale: de_DE\n_wpcf7_unit_tag: wpcf7-f72437-p70140-o1\n_wpcf7_container_post: 70140<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">I also checked the DOM. The wrapper ID and hidden <code>_wpcf7_unit_tag<\/code> are identical:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Wrapper ID: wpcf7-f72437-p70140-o1\n_wpcf7_unit_tag: wpcf7-f72437-p70140-o1<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Troubleshooting already performed:<\/p>\n\n\n\n<ul>\n<li>Disabled WP-Optimize<\/li>\n\n\n\n<li>Put Wordfence into Learning Mode<\/li>\n\n\n\n<li>Disabled Conditional Fields for Contact Form 7<\/li>\n\n\n\n<li>Tested in a private\/incognito browser session<\/li>\n\n\n\n<li>Created a completely new CF7 test form and a new test page<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The new test form produces exactly the same <code>wpcf7_unit_tag_not_found<\/code> error, so the issue does not appear to be specific to the original form.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Contact Form 7 version: 6.1.7<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Does anyone know what could cause CF7 to reject <code>_wpcf7_unit_tag<\/code> even though the unit tag is present in the POST request and matches the form wrapper ID in the DOM?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Thanks!<\/p>\n","protected":false},"template":"","class_list":["post-19036743","topic","type-topic","status-publish","hentry"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic\/19036743","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic"}],"about":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic\/19036743\/revisions"}],"wp:attachment":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/media?parent=19036743"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}