Hello,
Thank you for contacting Rank Math and bringing your concern to our attention. I’m sorry for any inconvenience this issue may have caused you.
It seems that the add to cart and checkout URLs are getting included in your sitemap. Please follow these steps to flush your sitemap cache:
1. Flush the Sitemap cache by following this video screencast:
https://i.rankmath.com/xXXhDt
2. Exclude the Sitemap files of the Rank Math plugin in your caching plugin. The cache could be via a plugin or from the server.
https://rankmath.com/kb/exclude-sitemaps-from-caching/
Then remove all the sitemaps you have submitted and resubmit your main sitemap only /sitemap_index.xml and give Google some time to recrawl your website.
If the issue still persists, please also share some affected URLs in the designated Sensitive Data section to further investigate:

It is completely secure, and only our support staff has access to that section.
I hope that helps. Thank you, and looking forward to your update.
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.