Fenix 6s Pro: passcode is no longer saved

Hello,

All of a sudden I have this problem that my Fenix 6s Pro does not seem to remember the passcode for the Garmin Wallet (which contains a Curve card) any more. I am wearing the watch, type in the four digit passcode and the card is activated all right. However, when I call up the card again some time later I have to type in the passcode again, although I have been wearing the watch all the time. Everything was fine until a few days ago: I would only have to type in the code after having taken off the watch.

I also have a Garmin Venu SQ, which does not have this problem.

It is really annoying, and I hope there is a solution for this.

Many thanks.