Hello,
Thank you for contacting Rank Math, and sorry for any inconvenience caused.
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 to 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.
[MOVED TO SENSITIVE DATA SECTION]
🙂
Hello,
We noticed that this subscription is attached to the email we shared in the sensitive data section.
Would you want us to merge the accounts under a single email address? If so what is the preferred one to keep using?
Looking forward to hearing back from you.
Hi,
it is ok 🙂
now I know where to login 🙂
thanks
Hello,
We are super happy that this issue is already resolved. If you have any other questions in the future, know that we are here to help you.
If you don’t mind us asking, could you please leave us a review (if you haven’t already) on https://wordpress.org/support/plugin/seo-by-rank-math/reviews/#new-post about your overall experience with Rank Math? We appreciate your time and patience.
If you 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.