Issues saving title tag and reverting back to title name.

Hello,

Thank you for contacting Rank Math and sorry for any inconvenience this issue may have caused you.

We’ve checked your site and found that Rank Math REST Routes that we use to update the data are being blocked by your Sucuri Website firewall and most likely this is why you’re facing the issue.

Please check the screenshot below for your reference:

To resolve this issue, please try whitelisting the following Rank Math REST Routes that are being blocked on your firewall.

/wp-json/rankmath/v1/updateMeta
/wp-json/rankmath/v1/updateSchemas
/wp-json/rankmath/v1/updateRedirection
/wp-json/rankmath/v1/getFeaturedImageId
/wp-json/rankmath/v1/getHead

You may try following this link to learn how you can whitelist Rank Math REST Routes in Sucuri Firewall: https://rankmath.com/kb/how-to-whitelist-rank-math-in-sucuri/

Learn more about troubleshooting this issue here: https://rankmath.com/kb/meta-data-not-saving/

We hope these steps help you solve the problem and please do not hesitate to let us know if you need our assistance with anything else.

Thank you for choosing Rank Math.