Hello,
Thanks for contacting us and sorry for any inconvenience that might have been caused due to that.
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.
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.
Hello,
I have updated the sensitive data as requested. Can you please check further?
Thank you.
Hello,
I’ve checked your site and it’s showing 500 internal server error in your browser’s console while Rank Math is activated and updating the post.

Since 5xx errors are usually caused due to server misconfiguration or other server issues.
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 as they will be able to help you with this.
Let us know how that goes. Looking forward to helping you.
I don’t think it is a server error as I am running the staging version of this site on the same server with no issue.
Hello,
I logged into your website’s admin area and found that Rank Math is disabled.
I tried to login via FTP but was unable to do so. The following error appears:

As the website is returning a fatal error when saving the post, we will also require FTP access to investigate further.
Please update the FTP logins so that we can have a closer look at the issue.
Looking forward to helping you.
Thank you.
Hello,
I have updated the sensitive data as requested. Can you please check further?
Thank you.
Hello,
I logged in to your website and checked the settings.
I activated the Rank Math plugin and changed the IndexNow API key and that fixed the issue.
Check the screencast in the sensitive data section.
Please check and let us know if you have any questions.
We are here to assist you.
Thank you. I appreciate your help
Hello,
We are super happy that this resolved your issue. If you have any other questions in the future, know that we are here to help you.
If you don’t mind me asking, could you please leave us a review (if you haven’t already) on https://wordpress.org/support/plugin/seo-by-rank-math/reviews/#new-post about your overall experience with Rank Math? We appreciate your time and patience.
If you do have another question in the future, please feel free to create a new forum topic, and it will be our pleasure to assist you again.
Thank you.