Hello,
Thank you for contacting us and sorry for any inconvenience that might have been caused due to that.
It seems like you purchased the PRO license with some other email address.
Can you please share the email address which you used to purchase or you can search and forward the receipt from FastSpring.com so we can locate your account?
Back to your concern, you can follow this guideline to install the PRO version of the plugin on your website: https://rankmath.com/kb/rank-math-pro-license-key/
Let us know how it goes. Looking forward to helping you.
Thank you.
Hello,
We are glad that helped.
Please feel free to reach out to us again in case you need any other assistance.
We are here to help.
Thank you.