Below are some simple tips which will help you unlock the game.
- Make sure you are using the right code in the right game.
- Check that you are entering the code in the right format. No spaces, no additional characters, enter the code with CAPITAL letters only, and include a dash (-) between every fourth character. If you're copy pasting the code, make sure that you highlight the entire code before selecting copy. The correct activation code format is XXXX-XXXX-XXXX-XXXX.
- Make sure your Internet connection is on and the signal is strong while registering the activation code. Do you have a firewall or antivirus software? If you do, have you tried disabling them while you activate?