Freek well, if John Do 's answer is correct, and it kind of makes sense, I'm guessing your wife cannot even see your card in her app interface, since it is yours, not hers. So, no, she won't be able to attach your card to a different IBAN, she can only do that with her own card, in her name, that she has ordered herself. It makes a lot of sense this way, the only thing is that the limit of 3 cards in total for the whole bunq Joint family seems on the low side...
