Garmin Pay setup fails

Hi there !

Garmin Pay was working perfectly together with my old iPhone Xs Max with iOS 13, but yesterday I upgraded to an iPhone 11 Pro Max an tried adding the cards to my wallet again - it failed while « preparing » just after hitting VISA even before asking for the card number.

I the completely wiped my watch (delete an erase data factory reset), uninstalled it from Garmin Connect, even deleted an reinstalled Garmin Connect on my phone... nothing.

Any ideas before I contact support?