Hello,
Thank you for contacting the support, and sorry for any inconvenience that might have been caused due to that.
I loaded your page sitemap in my browser and it seems to be working just fine. Submitted it to an XML Sitemap validator and it also returns with no error: https://i.rankmath.com/4d4XJE
Can you please follow these steps?
1. Flush the Sitemap cache by following this video screencast:
https://i.rankmath.com/pipRDp
2. Exclude the Sitemap files of the Rank Math plugin in your caching plugin. The cache could be via a plugin or from the server. For plugins or Cloudflare, please follow this article:
https://rankmath.com/kb/exclude-sitemaps-from-caching/
3. After clearing the cache, remove all your sitemaps from GSC and resubmit only the primary sitemap (https://yourdomain.com/sitemap_index.xml).
Let me know how that goes. We are looking forward to helping 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.