1. Open Paper Tiger application
2. Select the database in the "Select Database window".
3. Go to the View menu at the top of the screen.
4. Look for the option "Enter Permanent Serial Number" and a box will pop up type your serial number and hit OK. (Refer Image 1)
5. Your software is now unlocked.Please keep your serial number is a safe place in case you need it again in the future.

                             Image 1