Hello,
Thank you for contacting Rank Math and bringing your concern to our attention. I’m sorry for the delay and for any inconvenience this issue may have caused you.
Could you please also share your sitemap URL to further check and validate? You can add it in the sensitive data section

It is completely secure, and only our support staff has access to that section.
However, you can resubmit your main sitemap only /sitemap_index.xml and Google will use that to crawl the others.
Here’s a link that might be useful for this issue:
https://rankmath.com/kb/couldnt-fetch-error-google-search-console/
I hope that helps. Thank you, and looking forward to your update.
Hi, I resubmitted my sitemap and it took 48 hours for GSC to crawl it. Thanks for the help!
Hello,
We are glad it is all sorted now.
If you need further help or with anything else, please open a new support ticket here so we can help.
We are always here for assistance.