If you have purchased DeNoise AI 2.0, but are stuck in Trial Mode, the fastest way to reset your program is to go to your top menu and select Community > Switch Users.
If this option is greyed out and unclickable, here's the solution:
1) Open an image
2) Go back to Community > Switch Users
3) Switch Users should now be a clickable option and you should be able to log out and log back in to clear the trial mode.