I think I found a bug with the 3-D Secure approval of a transaction. My partner owns an account, he has given access to me. I have a card, which is linked to this account, which works fine.
However, yesterday I wanted to pay online with this card linked that account and therefore I had to approve the 3-D Secure authentication. The problem is, I received a push notification, but didn't see the awating event in the app. Maybe because it is not my account. My partner didn't get a push notification, but had the event in the app. However, he was not allowed to accept it, because this is only allowed for the card owner. Indeed he was also not allowed to cancel it.
So it was not possible for us to accept the 3-D Secure approval and hat do cancel the payment an make it againt with a card and an account, which both are owned by the same persond. This worked fine. However, this is not the way it was intended to work and my partner still has the awaiting event from the first payment in his app, he is not allowed to accept or cancel.