How to view UniPDF purchased license key?
If you have missed your license key, you can retrieve your license key by visiting the FastSpring User Account Management Portal. Log in with your email address used to buy the license.
You will receive an email with instructions on how to access your FastSpring account.
If you are still having any issues, please feel free to contact the Unidoc support team by emailing at firstname.lastname@example.org.