Hello,
Thank you for contacting Rank Math and sorry for any inconvenience that might have been caused due to that.
Please head over to your WP-admin dashboard > Settings > Permalinks and hit ‘Save changes’. Next, head back to GSC and resubmit your sitemap.
Let me know how this goes. Thank you.
Hello,
I wanted to add that if it doesn’t work, please limit the links per sitemap to 100 or below and see if that makes a difference:
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.