I downloaded it from DVDFab.com
I have attempted both to execute the registration code from the email file attachment and saved the file, opened it as text, and copied and pasted the code into the registration window. Both options worked for Platinum. Neither option worked for Mobile.
I believe another program (not related to DVDFab) that I installed and uninstalled may have killed my registration as it did with a couple of other programs.
When uninstalling DVDFab, the registration codes stay so when I reinstall the program they are found again. I would like to clean that all out an start over but that level of computer tinkering is beyond my knowledge level.