Still can't do anything with the app if I try to log in with my account. (iPad2 9.1, iPhone 4S 9.1 and iPhone 5s 9.1).
Works when not signed in.
Playing with airports and looking at dept, sched., arr., en route. nice feel to the screen. One thing that I would suggest is after clicking on a specific scheduled departure (in my case out of KDEN), going back, using the "< KDEN" at the top, brings you to the static KDEN page (two "steps" back) instead of back to the scheduled departure page (with options at top for departures, et al). This is the same for all options which means that if I want to check multiple departures (or any of the options) I have to go to the "Plane" icon at the bottom each time.