Apple pay not working at Trader Joes

When the Trader Joes in my area first started using Apple Pay, it worked fine for me. Lately I get the ding when I hold my phone to the register and the location shows up but the amount doesn't register and so the card doesn't work, neither does the other card I've used work. Apple Pay is working at other places like Whole Foods and Panera Bread. TJs cashiers give me a dirty look and state it's my problem not theirs! My expiration date on the card I usually use has changed (although nothing has changed on the other card) and I wonder if that's the problem. Any recommendations? It seems so odd that I only have this problem at Trader Joes and am told no one else is having problems although someone did come over and told me he would speak with their technician.