Hello
Thanks for contacting us, and sorry for any inconvenience that might have been caused due to that.
I can see the PRO badge is already showing next to your account. Which means, the subscription is already activated.
In order to upgrade your account to PRO on your WordPress website, please follow the guide below:
https://rankmath.com/kb/how-to-upgrade-to-rank-math-pro/
Hope that helps, and please do not hesitate to let us know if you need our assistance with anything else.
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.