Can I use my wife’s card on my account to pay our mortgage? Her credit card will have the address on the mortgage. She has her own Plastiq account but just just used it once for something else about 2 years ago. The alternative is to add the mortgage to her Plastiq account, but her name isn’t on the loan and I know Plastiq likes to ask to verify the biller. I had to send them a copy of my mortgage bill 2-3 years ago. Will adding her card to my account be a problem?