Yeah, I've had it happen and it is what Fenril said already. It's your ip address and not your CC. If you can change your IP or use a dif internet service temporarily just for that stuff you should be able to get around it. I think I just waited 3 days or so and it worked. I seen many stories about people calling customer support and them not know what is going on or blaming it on the credit card so I wouldn't hope to much that they can help you.