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.
You can use the Google domain (not @gmail) to connect your website.
Please verify using the URL prefix and ensure that you have verified the correct version of your website on the Google Search Console (HTTP or HTTPS, www or non-www). You can reconnect it on your WordPress dashboard > Rank Math > General Settings > Analytics.
The URL-prefix property also helps keep your sitemap in sync with Google Search Console as we submit it automatically for you. In addition, the domain property won’t work correctly on some sections of the Analytics module such as the IndexStatus.
Then, please make sure that the Google account you used to connect your Google Search Console profile is the same one you have used to verify your domain on GSC.
After that, please follow this guide to connect Rank Math App to your Google account and grant it with all the required permissions: https://rankmath.com/kb/connect-your-google-account/
Hope that helps.
Thank 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.