Hello,
Thanks for contacting us.
Assuming you are using the latest version of all the plugins and the themes (please update if not yet), 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.
Please let us know how that goes.
Thank you.
Hello,
I went through the process outlined from the documentation that you sent (https://rankmath.com/kb/check-plugin-conflicts/). The plugin that RankMath is clashing with is CPT UI.
The concern though is that I have other websites that use both plugins and there is not an issue. This issue site and the other non-issue sites are using the same plugin versions for both WP, RankMath and CPT UI so I am at a loss as to what the root cause of the issue is.
Hello,
Thanks for testing the conflict.
We might need to take a closer look at the settings. Please edit the first post on this ticket and include the affected URL(s) and WordPress 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,
Following up on this, I discovered what the issue was. There was a setting in RankMath that was configured to noindex categories (which for me was custom taxonomies) that were empty. I adjusted the setting and it fixed the issue.
Thank you for the help!
Hello,
We’re glad that you got that sorted.
If you 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.