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.
I would recommend disabling the plugins one by one to check what could be causing it, also I would recommend contacting your hosting support, to check if something is blocking the WordPress API REST.
You should also contact the hosting team and ask them to check the Firewall Settings and whitelist the updateMeta rule.
I hope that helps
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.
