I have implemented donate button which is really working fine, but there is one issue which was reported by few donas.
They are not able to donate it using their credit card. They are seeing Error
"Something went wrong"
We couldn't process this donation, Please try again later. this could just be temporary glitch.
But few donors are able to make payments using their credit cards.
I have used few test credit card and out of one worked.
**1) 4111111111111111 - Didn't worked
2) 4012888888881881 - Worked
3) 4222222222222 - Didn't worked**
Any idea, why all credit cards not worked
Those card numbers are not accepted by the PayPal sandbox. Use a random one from developer.paypal.com
For better results when testing, use a Personal sandbox account , it is faster for testing than entering a card manually, and less likely to result in an unexpected decline.
As for any declines of real cards in the live environment, that would be an unrelated issue; likely a problem with that particular card.