Hello,
Thank you for contacting Rank Math and bringing your concern to our attention.
Please note that the option to ping search engines was removed because that is no longer used by search engines so we decided to remove it from our plugin as well.
As for the question about submitting the sitemaps, we would recommend that you follow the steps here to correctly submit the sitemaps to Google: https://rankmath.com/kb/submit-sitemap-to-google/
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.