Hello,
Thank you for contacting Rank Math, and sorry for any inconvenience caused.
Have you received the confirmation e-mail of your PRO plan subscription?
It seems like you purchased the plugin with some other email address.
Can you please search and forward a receipt from FastSpring.com so we can locate your account? You can add them in the designated sensitive data section.

It is completely secure, and only our support staff has access to that section.
Thank you, and looking forward to your update.
Ah it’s true!
I have found the other email address and account and i have found it!
Soory for the inconvenience.
Have a nice weekend.
Stefano
Hello,
We are super happy that your issue is resolved.
If you do have another question in the future, please feel free to create a new forum topic, and it will be our pleasure to assist you again.
Thank you.