Why did my Apple Pay suddenly stop working with a valid payment method?

Same... and it’s the Apple Card..🧐Can’t find a way to report this as a bug to Apple. So, incase anyone’s monitoring these forums…

One of the apps I’m having trouble with didn’t care that I was unable to even login to their app for 2+ weeks, let alone that I couldn’t get Apple Pay to work, after I finally got a functioning code (12+ hours after trying to sign in) for their absurd 2fa.

ANYWAYS…

• AT&T: Apple Pay won’t work on app but works on safari. Been like this for 2-3 months.

***EDIT:

AT&T app was logging in automatically even though the password changed. Apple Pay worked on the app this time once I signed out AND deleted the account login info and then logged into. Similar steps for the other apps I listed did not resolve their issues.

• Wendy's: Apple Pay hasn’t worked but I got it to once this week. Been about a month since first time I noticed this.

• Taco Bell: Apple Pay doesn’t work. Yesterday was the first time I had an issue with it, had to use card number (and lose the extra 1% cash back 😒).

• Gas stations: Functions, inside and out.

• A local pizza shop: Functioned.

…Seem to have no issue with in person transactions.

• Sheetz, DQ, & McDonald’s apps: Functioning. (Subway, at least once, too.)

Anyone find any resolution? Or a reasonable explanation?