Try to setup garmin pay with garmin mobile connect.
It is not possible to select my device: "device not connected" (is connected)> help > not connected or garmin pay not supported.
So I cannot couple a card to my wallet.
According the website of mastercard, garmin pay is supported in Belgium.
https://www.mastercard.be/nl-be/particulieren/onze-betaaloplossingen/digital-wallets/garmin-pay.html
Also the option garmin pay is in the specifications of the Fr645 the moment I bough it.
App version: 4.28
Fr645 version 6.40