Hello,
Thank you for contacting the support and we regret the inconvenience caused.
We can see that your PRO subscription is already activated.
Please follow this guide to install the Rank Math PRO plugin:
https://rankmath.com/kb/how-to-upgrade-to-rank-math-pro/
Once done, you can follow this guide to disconnect and reconnect the website to your PRO account to activate all the PRO features: https://rankmath.com/kb/website-not-shown-in-account/#how-to-disconnect-your-rank-math-account
Please let us know how that goes.
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.