Hello,
Thank you for contacting Rank Math support, and sorry for any inconvenience that might have been caused due to that.
I can confirm that your account has the PRO plan already.
Please head over to your Rank Math account page and click on the “DOWNLOAD” button to download the latest Rank Math PRO version.
https://rankmath.com/my-account/

If that doesn’t work, try downloading it using a different browser or in an incognito window.
Please refer for more guides here:
https://rankmath.com/kb/how-to-upgrade-to-rank-math-pro/
https://www.youtube.com/watch?v=nCDe67K_3rA
Let us know if the issue persists and we will be more than happy to further assist 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.