Hello,
Thank you for contacting us and sorry for any inconvenience that might have been caused due to that.
Can you please share some more details about the issue you’re facing so that we can check this further for you? You can also share a screenshot with us by using a tool like https://imgur.com/upload
However, we can see the Rank Math Rest APIs are getting blocked by your Wordfence firewall:

In this case, if you’re trying to change the metadata on your website, it may not be saved. In order to resolve this issue, you’ll have to whitelist 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
You can try following this link to learn how you can whitelist Rank Math REST Routes in Wordfence Firewall: https://rankmath.com/kb/whitelist-rank-math-in-wordfence/
Let us know how it goes. Looking forward to helping you.
Thank you.
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.