When I'm on the billing page, I can't tell which credit card I used. I'd like to see the last four digits, so I know which bank account this comes from. When I click on 'change credit card' this still doesn't show. And it doesn't even show on the invoice, even though the invoice is 'paid'. Of course, this could be my error, but if it is there and I'm not looking properly, then it's not easy enough to see