Unable to delete credit card from Garmin Pay

I also have the same problem, I was set up my cards but then I was not able to access my wallet. It always tells me my watch isn’t connected.

Click the card in Garmin Pay in the app, scroll down, click Remove card. Does that work? 

An error message appears on the clock, a card has to be deleted.

In the Garmin app there is no such card, how can I stop the error message from appearing.