Credit card authorisation failing with Autofill
All my attempts to pay online with 2 out of my 3 cards have failed in the last 2 weeks. The Mastercard says it has connected to my bank and I'll get an SMS - but the SMS never arrives, and when I phoned my bank, they said they had no authorisation attempts reach them at all! The Visa card simply says it failed at the first step, without saying why or serving up the usual security dialogue. (The other Visa card just works).
I suspect the Autofill may be the problem here. I've recently had other scenarios where FF filled in a field for me, but the Javascript behind the website refused to accept it, eg saying it wasn't a valid phone no when it clearly was. The only way to get round this seems to be to type in the complete value yourself, which rather defeats the object. It could be something else, but it's clearly dependent on which software's running behind the card, as the third card succeeds.
എല്ലാ മറുപടികളും (3)
There certainly are sites coded in a way that any autofill is "unexpected" to them. Usually the same is with pasting into their fields. They might want to reformat the input, or need a keypress (an extra space, or delete and retype the last digit etc.) to trigger their mask, or inline validation to even see the format of the value entered.
However none of that should mean a card gets accepted, but a) your two–factor trigger from your bank never happens, or b) the card gets declined. Are you sure you haven't forgotten to update any card details when reissued the last time, or your CVC/CVV isn't different?
I am certain the card details are correct. They worked until recently, and suddenly stopped working. And they still work in other browsers. If such details were wrong you would get some kind of error from the Mastercard, not just a silent fail.
Are you sure you don't have different card data saved in different browsers or respective account wallets, if you're relying on that as a comparison?
To check the payment credentials stored with Firefox, you can verify all of the details are current in settings "Privacy & Security" › "Payment methods" — the "Manage payment methods" button brings up the list that you can check. If everything looks current there, then yes it's possible that the acquiring page does some formatting tricks and captures the card info wrong due to its scripting. (Without an example of such page and the error messages encountered it's all just hypothetical, and might be better to contact them first — and if they face any platform compatibility woes to have them file bugs with reproduction details from their side.)
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