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When I click to fill in a Credit Card field to pay for something, my correct card info appears momentarily, but then disappears. To execute a payment, I am forced to manually fill in all required information. I made sure the "save autofill" box was properly checked in the Settings, and it was. Names, addressed, etc. are all filled in properly; only credit card info is not.

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.

I have credit card auto-filling enabled and several credit cards active. However, most of the time, when I go to use the autofill, though the card choices appear and I am able to select one, and it usually temporarily shows the fields to be filled, when the menu closes, the auto-fills are gone! It's worse than not having autofill at all. This seems to happen the majority of sites where I try to use it.

The autofill card details isn't working. When I try to I get the message "You have no saved cards."

When I go into the Privacy & Security tab I can see that I have a number of cards saved correctly.

Somewhere in my version of Thunderbird, there is an old adress of one of my correspondant which is recorded This adress is no longer valid and I have deleted it from my adress book Nonetheless, when I start to write my correspondant's name, this adress keeps being proposed among the first options for the automatic completion of the adress How can I delete this wrong adress from the hidden part where Thunderbird has stored it?

I have some names that pop up in an autofill dropdown when trying to input names. Some of them are misspelled and some are obsolete. How do i delete these? I've looked in Privacy and Settings and they are NOT present under "Addresses and more". Those are complete addresses with names. The ones i'm referring to are just names that pop up in an autofill drop down. These are names that i can't seem to find anywhere in Settings.

I came across another thread here that said try highlighting the name and Shift+Fn+Delete. This does not work

Thanks in advance.

I need to edit the phone number Firefox uses to autofill forms. Sometime in the past, I accidentally entered one incorrect digit in my phone number, and now Firefox wants to send verification codes to that number.

I am unable to view old payment methods in order to delete them. When I go to Settings, Passwords and Autofill, Payment Methods, Manage Payment Methods, I can only add new methods. The old methods do not show up, i.e. the list is blank. I have many old payment methods that I'd like to delete that show up in drop-down when I click in a credit card number field. Thanks, Ed Moulton

When I’m on a screen that asks for my email address, it shows me two addresses to pick from, and I don’t use either one. I’ve searched everywhere, and can’t find where it’s getting these email addresses from. How can I change this?

I’ve attached a screenshot showing what I mean:

Firefox autofilling my freaking CC number though those settings are disabled. I want to know what Firefox file my CC number is stored in.

Give me the filename -- I'll do the rest...

When a site asks for my address, I try to choose one from the drop-down menu of addresses offered, but it firstly prints my address in the address window and then, when I press enter or do anything whatever, it deletes everything in the address window. Worse than that, if I try to ignore the dropdown list offered, and try to type in my own address, it deletes it.

This behaviour continues, no matter what I try to do do trick it into either (a) filling in my address, or (b) using the offered addresses in the drop-down menu. I.e. there is nothing I can do to ever get an address to stay in the address window and give me a fully filled out form - the address window always ends up empty.

I've tried to alter the settings, telling it to ignore the automatic filling in and remembering of addresses, but I can't turn this address-killer feature off.

Yes, it's made filling in forms on line impossible, since it keeps making the address-window empty

When I go to pay on a website, firefox offers as options the various credit cards I've saved. But when I click on one, it disappears and then I need to fill it in manually.

While I have your attention, when my address auto-populates, it does so, highlighted in yellow. If I manually add and then delete a space, it drops the yellow highlight. If I don't, websites often don't recognize the address. How come?