Hello,
Thank you for contacting Rank Math and sorry for any inconvenience that might have been caused due to that.
Could you please remove your sitemaps on GSC and resubmit only the main sitemap sitemap_index.xml
then allow some time for it to be crawled, this has been known to resolve the issue.
Also, I noticed you have a lot of links to be crawled, Google sometimes takes a few days to process it, after resubmitting your sitemap, I would recommend waiting a few days and after that check it again.
Hope that solves your issue you are facing.
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.