Hello,
I live in France and I tried to donate 50$ using my American Express card but I have an error regarding the ZIP code not matching billing address.
In France we don’t have ZIP codes but postal codes instead and the one I filled was correct.
The problem is that my AMEX app on the phone sent me a notification that a payment to Let’s Encrypt has been done.
So I can’t complete my donation process (and receive a Yubikey) and probably be debited of 50$.