Thanks for the feedback. It's important that people let us know if you have problems with the ordering system -- we have no other way of knowing that something went wrong!
When you say you used the appropriate button, which button do you mean? Is it the one that says Activation Support, or the one that says "I've Already Purchased This"?
"I've Already Purchased This" is the button that helps you unlock the game if it doesn't unlock automatically after activation. If that's the one you're having trouble with, please try Activation Support. This will give you some information you need to email to email@example.com. Send this information to us, and we'll unlock it manually for you. (Be sure to include your order number, please.)