Hello,
Thank you for contacting Rank Math, and sorry for any inconvenience caused.
Two variations of the sitemap are returning 200 status, you can check using https://httpstatus.io/:
(Check screenshot in the sensitive data section)
Please ensure that only 1 version of the sitemap is working (200 status), and the rest are redirecting to it.
Please follow the steps in this link:
https://rankmath.com/kb/couldnt-fetch-error-google-search-console/#num-5-4-redirect-all-three-other-versions-to-your-preferred-variation and redirect to the correct version.
Once done, clear your website cache and resubmit the sitemap in the Search Console.
Hope that helps.
Thank 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.