On-page SEO editing won’t save

Hello,

Thank you for contacting Rank Math and sorry for any inconvenience that might have been caused due to that.

I think we might need to take a closer look at the settings. Please edit the first post on this ticket and include your WP logins in the designated Sensitive Data section.

It is completely secure and only our support staff has access to that section. If you want, you can use the below plugin to generate a temporary login URL to your website and share that with us instead:

https://wordpress.org/plugins/temporary-login-without-password/

You can use the above plugin in conjunction with the WP Security Audit Log to monitor what changes our staff might make on your website (if any):

https://wordpress.org/plugins/wp-security-audit-log/

We really look forward to helping you.

Hello,

Thank you for contacting Rank Math and sorry for any inconvenience that might have been caused due to that.

After checking it, it seems you get the following errors when trying to save:

api-fetch.min.js:2 POST https://website.com/wp-json/rankmath/v1/updateMeta?_locale=user 403
post.php:1 Uncaught (in promise) {code: "invalid_json", message: "The response is not a valid JSON response."}

Those errors usually are caused when something is blocking access to the WordPress API REST.

Since you already tried for plugin conflicts and even with everything disabled, it still doesn’t work, I would recommend contacting your hosting support, to check if something is blocking the WordPress API REST.

Please let us know if you find the culprit.

Looking forward to helping you.