Hello,
Thank you for contacting Rank Math today, and we apologize for any inconvenience this may have caused.
Please follow these steps to fix the issue:
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/
Once done, clear your website and browser cache and check the sitemap.
I hope this information is helpful, and please do not hesitate to contact us if you require any additional support.
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.