If your key is not working, please try one of these solutions: Enter the key exactly as it appears. These codes are case sensitive! Check for and remove spaces or letters/numbers that are not present in the code you were given. Note: Copy/paste may not work properly (or insert a ‘v’ at the end of your code), so try entering it manually. If you have used your key to create an account in the past, you will not be able to reuse that same key again. Keys are single use regardless of whether your account still exists. Just log into the account you registered after purchasing the game. If you are still having trouble with your key, please contact us at firstname.lastname@example.org and include the key code in your message.