Update: still a pointless sign in method - which, when the app crashes at least once every time it opens, makes sign in impossible. This wouldn't be a problem if, like 99% of the rest of the internet, one could log in with a username and password (my bank allows it, and I care a hell of a lot more about security there than I do when I'm ordering lunch). And to preempt the inevitable "try our contact us link" followup: considering how long a refund has taken, I have no faith that'll help.