Hello,
Thank you for contacting Rank Math, and sorry for any inconvenience caused.
Could you please get in touch with your web host and ensure that the ModSecurity is disabled or they are not blocking any process of the plugin?
If ModSecurity is disabled and the issue persists, it would seem like a conflict with one of the plugins or the theme you are using.
To determine that, please follow this troubleshooting guide:
https://rankmath.com/kb/check-plugin-conflicts/
Only the site admin would know and your users won’t be affected by this troubleshooting.
I hope this helps. Looking forward to helping you.
Ok i installed the plugin and than activated RankMath in the trouble shooting mode, i tried to change the General Settings but i still get redirected
Edit: I’m looking into the Tutorials of my webspace and they say i can’t disable ModSecurity, they also say its to secure my site why should i turn it off?
I tried again to change the settings and this time i’m getting redirected to my 404 site but the changes saved. This happend after i tried to activate and deactive other settings before i changed the one i needed.
Hello,
We might need to take a closer look at the settings. Please edit the first post on this ticket and include your WordPress & FTP 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,
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.