Hello,
Thank you for contacting Rank Math and sorry for any inconvenience that might have been caused due to that.
Please head over to Rank Math > General Settings > Analytics and click on Reconnect.
Have a look at this screenshot –

Once you click on Reconnect, you will be able to connect a new Google Account with your site.
Hope this helps.
Looking forward to helping you. 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.