Hello,
I also had success with my credit from two orders T17 + and T17.
Yesterday i ordered one Antminer S17 Pro-53TH/s - payment USD Wire. Now I had 2 days to make the transfer before the order is canceled.
I contact Bitmain and today they deduct the amount in the user center.
After this i have the choice to pay with USD Wire or Paypal. I must pay 285 ,17 USD =).
It is imperative that USD wire is chosen as the payment method. Only then does the customer service have to react before the order is canceled.