Why aren't all payment methods showing in the Catawiki app?

What to do when my credit card is declined?

How to pay if the link in the payment email does not work

I am being asked to pay for an object, but I did not place the bid.

I made the payment through MultiBanco but did not receive any payment confirmation yet

My purchase was cancelled. How can I receive a refund if my payment was made through MultiBanco?