Using the iframe and charge. On a live account. I can charge a correct card but whenever I put the wrong CVV or expiry or address I get the same 402 error. I see lots of community tickets getting the same thing but no answer or explanation. Why do I not get a proper decline message with details of what is wrong?
This is when I try and read the charge response. And this is not part of a nice JSON error this is a server 402 error, like getting a 404 error, as far as I can tell. As if I am trying to view a page of a paywalled sites I haven't paid to see.