My Apple Pay is not working

That’s a merchant error. There is no problem with Apple Pay.

Apple System Status 

Apple - Support - System Status

There are several possible reasons you might be experiencing issues. So let’s start with a few basic steps. I’ve added links to support articles that may offer solutions to issues you might encounter. 

Are you in a country or region that supports Apple Pay?

Countries and regions that support Apple Pay - Apple Support

Does your financial institution support Apple Pay?

Apple Pay participating banks in Asia/Pacific, Africa, Europe Latin America, Middle East and United States - Apple Support

Confirm your region is set correctly.

Change the language and region on iPhone - Apple Support

Change your Apple ID country or region

I’ve just tried using ApplePay with both cards in my wallet,(which both have funds) and both failed with a message that Apple Pay in not working.