I managed to get one of my codes working. Even though the first several times I entered it, it didn't work. This time I turned on caps lock before entering the code. Which I thought I did already before. Even though you enter a lower case letter, the textbox shows a capitol letter anyways. Well I guess it still reads it like a lowercase and counts it as wrong. When/If it gives you a suggestion that you entered before, don't click that. It might bring up the lower case wrong one. My code was a 12 digit code by the way.
Edit: Okay, so I even now got an 11 digit code to work...
I typed in the 11 digit code, and tried to guess the 12'th digit after it. As it may have failed to print on the sticker. And I actually got it to work. First do as I said above, make sure caps lock is on and enter your code. If it is 11 digits, then add an extra digit to the end. Starting with 1, and if that doesn't work 2, 3, 4, 5, 6, 7, 8, 9, 0, move on to alphabet letters. Q, W, E, R, T, Y... Make sure caps lock is still on. I eventually guessed the right last digit. I guess there could be a chance your twelth digit was suppose to be in the beggining of your code, and you'll need to guess the number/letter before your code. Heck it could even be in the middle of your code somewhere, but for me it was at the end.
