Hello,
Thanks for contacting us, and sorry for any inconvenience that might have been caused due to that.
Can you please try following the steps mentioned below?
1. Check if Rank Math Not Updated to the Latest Version.
2. Check If Rank Math REST Route is Blocked.
3. Check if it’s Due To ModSecurity.
Let us know how it goes. Looking forward to helping you.
Thank you.
Hi Sakib,
thanks so much für your quick reply. We have already checked for 1. and 2. but with no success. For point 3 we would need to ask for support from our domain-provider, which isn’t that easy.
Is it possible that you can check our WordPress-Dashboard in order to identy the problem?
Thanks and have a great weekend!
Louisa
Hello,
Please edit the first post on this ticket and include your WordPress logins in the designated Sensitive Data section.
Please do take a complete backup of your website before sharing the information with us.

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.
Hi Jaideep,
thanks! I have installed the Temporary Login Plugin. I have one question though: Which email adress am I to use for your temporary login?
Hello,
You can use s******@r*********** in the the email field to generate temporary login.
Looking forward to helping you.
Thank you.
Hi,
perfect. Here is the temporary Login: [MOVED TO SENSITIVE DATA SECTION]
It is vald for one day afterthe first Login.
Thanks!
Hello,
I checked your site. Initially, tried to enable modules and making minor changes to the settings, and indeed the settings are not being saved.
#1 ~ On initial troubleshooting,
I found that one of the REST Route from Rank Math is being blocked somehow on your site. Please check the screenshot in the sensitive data section.
Blocked route: /wp-json/rankmath/v1/saveModule
#2~ On step two of troubleshooting,
I found that the following URL is redirecting to the homepage in your case.
https://yoursite.com/wp-json/rankmath/v1/saveModule
Which means the REST API from WordPress is possibly not enabled for your site.
Since we rely on that for our functions, the REST API should be working to function everything properly.
As the REST API usually is enabled by default, it must be disabled somehow on your environment. To resolve this issue, kindly try enabling it back to see if that works for you.
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.