and entering the code from the inside of the Game DVD case "Diablo III Authentication Key Collectors Edition - US"
Using all caps I am entering my code listed and I receive an error:
"An error has occurred.
The game key you entered cannot be claimed. Please check the key and try again. Alternatively, you can enter this key for a different region by changing the leading part of the www.battle.net URL (ex. "eu.battle.net") in your web browser, or for a different Battle.net account."
If I enter is again it will sometime aske me to enter a security code, but the I receive the same message! Help I want my wings!