Upon running DVDFab software, you will get a box asking you to "Authorize" or "Try". Click on the "Authorize" button and then input your registered email account info to complete the authorization process.
After that, you can click the Menu (the hamburge button) on the right-top corner, click "License Info" to check the license status, once the authorization is successful, the license status will be shown as “Activated”.
Note: If you have Fab365, you will see "Fab365 Info" instead of "License Info".