Hello I paid for DF Personal Pro, I received the email confirming the payment with the license key. I put the key into the product where it says "License key:", and hit apply. Message pops up saying "Thank you for Registering!". I hit OK, the message box goes away, I wait a few seconds and the license number disappears and the product complains that I need to Pro license to enable any of the features. I initially had the trial version installed and it expired so I paid for $45USD for the Personal Pro version.