Hello,
It seems that you have opened this ticket using a Rank Math free account. Could you please share the email address you used to purchase Rank Math PRO so we can verify your purchase? You can add it in the sensitive data section

It is completely secure, and only our support staff has access to that section.
Meanwhile, please reconnect your website to your paid rank Math account and try reconnecting your site to your Google account.
I 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.