How do I update incorrect information about a card?

A lot of work has gone into automating the details about every card, but it's not a perfect system, so your help is hugely appreciated to help keep information up to date. If you see something that is wrong or needs to be updated on a card, please tap the Report a problem with this card link at the very bottom of every Card Details screen and let me know what needs to be updated and I'll get that fixed ASAP (sometimes within minutes!)