[dotnet_nerd]

Very strange James, my Costco CapitalOne card did the same thing, the tap stopped working several months ago.

But oddly, it now works again. Maybe it's a software glitch on their end.

There must be some sort of business logic involved because tap only works if the amount is under X dollars. X varies from store to store. Under $100 at most places, but higher at Costco and other large $ retailers.