Worst airline app ever! Even though I'm signed in and my frequent traveler number is on my profile, it doesn't automatically populate to my reservations. Also, there is no way to copy and paste this 9 digit number, so you either have to screen shot it or write it by hand and then type it in on the reservations screen! Also, when trying to check in for my flight the app conveniently seems to forget I already paid for seats and tries to get me to pay a second time! Will check in at airport.