The I cannot get the app to work on my Lenovo phone - it aborts as soon as log in is pressed (with correct userid and password).
Works fine on my Samsung tablet, but that's a bit big to take to the game! I used the plastic season ticket to get in.
App works fine on Lady Skwerr's Samsung phone and she used it to get into the United game with no trouble.
Last night she tried two different turnstiles and both refused the QR code. She was let in by a steward.
Not a solid performance yet, methinks.
(Oh and password is spelled "passwrod" twice within the change password screen.)