One question. I registered in CAD credit card yesterday. I plan to apply for a USD credit card, how do I swtich my CAD credit card to USD credit card? In this case, I do not want to cancel my existing registration (using CAD credit card) and do a new registration (USD credit card). It may take a while to get a new USD credit card. Is this possible to swtich credit card for the payment? If it is not possible, then I do not need to apply for a USD credit card.