Hello,
Thank you for contacting Rank Math, and sorry for any inconvenience that might have been caused due to that.
Rank Math will generate automatically for you, and you will then need to submit it Google. The path of your sitemap that you should submit would be domain.com/sitemap_index.xml
as it will include other sitemaps you have (e.g. posts, pages and categories).
I do suggest to go through this link in our KB for more information:
https://rankmath.com/kb/configure-sitemaps/
I hope this helps you with your issues.
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.