First it told me my card had expired (it hadn't). Then it was asking me to accept t&c's which I did, but then it wouldn't light up the Accept button. In frustration I refreshed a few times and it finally accepted the order. It then told me it had trouble processing the order and to contact customer support. CS couldn't find my email address, then managed to find the order via my order number, 10 minutes later and finally confirmed everything was proceeding OK.
Didn't get a confirmation email until 30 minute later and the order is still "Pending" in the Wallet screen, so I have no idea whether I will get one or not :-\