Hello,
Thank you for contacting Rank Math, and sorry for any inconvenience caused.
I checked the sitemap, it is not generated by Rank Math.
Please check if there is a sitemap file in the root directory.
Log in to your web server via FTP and delete the sitemap file present in the root directory.
If there is no sitemap file in the root directory, check if the theme or any plugin is adding the sitemap.
You can follow this troubleshooting guide:
https://rankmath.com/kb/check-plugin-conflicts/
Once you have disabled this sitemap, you can submit the sitemap_index.xml
generated by Rank Math in the Search Console.
Hope that helps and please do not hesitate to let us know if you need our assistance with anything else.
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.