This key mechanism is only applicable to Mac DMG v3.15.1 or below. When upgrading to DMG v3.15.2 or later, the old key will be invalid, please refer to the latest Activation Tutorial.
Please note the instructions for activation are made for the version purchased from Kdan Creative Store or Stacksocial.
1. Launch PDF Reader Mac DMG v3.15.1 (Download here)
2. Click “PDF Reader” and choose “Activate Software” from the top menu bar
3. Enter the license key and hit the “Activate” button to register PDF Reader. (The license key is sent to the email address you used to place the order)
Note: If you purchased the permanent license from the Mac App Store, please click the “Restore Previous Purchase” button in the PDF Reader app (downloaded from the App Store) to restore your license.