Hello,
Thank you for your query. We will be super-happy to help you with your concern.
To locate where the 404 is coming from you would need to troubleshoot further, we have a tutorial for that: https://rankmath.com/kb/find-the-source-of-404-errors/
Specifically the last few steps of the tutorial.
If you do not find a solution you can share with us your WP admin access in sensitive data field and we would be happy to try to solve it for you.
We hope that helps and we are here should you have any follow-up questions.
It was a mistake from the theme.
Thank you anyway for your help.
Hello again,
We are glad to hear that this issue has been resolved. Thank you for letting us know. This ticket will be closed now, but you can always open a new one if you have any other questions or concerns. We are here to help you with anything related to Rank Math.
We appreciate your patience and cooperation throughout this process.
Thank you for choosing Rank Math.