Once you purchase a license key, you can register DriverDiary by clicking on Help -> Register from the main menu.

When the registration window pops up, you will be given a registration code. You must take this registration code and login to the website with the username and password you created and request your registration key. Your registration key will be sent to you via the email address we have on file.

Copy the registration key from the email you received and paste it into the box in the registration window and submit it.

If the registration key is valid, the trial period will be removed.