I am a stripe pro user, one of my users tried to register and it gave him
I tried in testing mode and it all went well, I could see stripe had received his request and declined it for insufficient funds on his card, but he wasn’t notified with that instead he received that error. I tried using a random number and see what will happen, it gave me the same error about invalid parameters, even stripe is replying with incorrect card number in the logs in S2 logs and on stripe website. So those errors are not showing to the user in the registration page.