I was able to register(and to use it for payments) since more than a week a Revolut MasterCard virtual card.
Yesterday, I tried to make a contactless payment and it did not work. Furthermore the watch was completely frozen on the wallet screen and only a very long light-button press made it restart and working again.
Did someone else had this kind of issue with Wallet + Fenix(maybe with 5 too)
Also - i realized a bit later that i had not enough money in my account(almost 1 euro less than the payment amount). This made me thinking that maybe, just maybe, when trying to show some kind of insufficient funds error it frozen the watch.