Trouble with Amex payment

Lager — Sun, 21 Sep 2025 10:09:33 GMT

After entering the total amount and the card info for an Amex card, Square says payment failed something went wrong. The same process works fine for Visa and M/C. I am certain the card is OK. What am I doing wrong?

Re: Trouble with Amex payment

JK_Fiber_Art — Thu, 02 May 2024 13:15:26 GMT

Hi Lager,

Unfortunately we can only guess - if you're manually entering the card details, other than the card number, security code, expiration date and Zip Code and assuming those details are correct - if it's not accepted, in most scenarios, the issue on the customer's side or bank. There can be multiple reasons, but there's no way anyone here would know the exact reason. Did you get any error codes or messages ? Also, if you check this site, there have been no Square System issues reported.

thread Re: Trouble with Amex payment in Hardware Setup & Troubleshooting

Trouble with Amex payment

Re: Trouble with Amex payment