Hello,
Thank you for contacting Rank Math and sorry for any inconvenience that might have been caused due to that.
This usually means your sitemap is being cached on your end. To resolve this please exclude your sitemap URLs from being cached and clear your site cache then do the following:
1. Head over to WordPress Dashboard > Settings > Permalinks
Hit the save button once.
2. Go to WordPress Dashboard > Rank Math > Sitemap Settings
Hit the save button once.
That should fix the issue.
You can validate your sitemap here to check if it has any issue before submitting on GSC: https://www.xml-sitemaps.com/validate-xml-sitemap.html
If it doesn’t, please do let us know so we can look at this further.
Thanks Michael Davis.
Now Its working fine. Thanks for Help.
Hello,
We are super happy that this resolved your issue. If you have any other questions in the future, know that we are here to help you.
If you don’t mind me asking, could you please leave us a review (if you haven’t already) on https://wordpress.org/support/plugin/seo-by-rank-math/reviews/#new-post about your overall experience with Rank Math? We appreciate your time and patience.
If you do have another question in the future, please feel free to create a new forum topic, and it will be our pleasure to assist you again.
Thank you.