Trash. The last 3 times I flew AA, the app wouldnt let me check in (it said checked in, but the page never changed from the "check in" button to a "boarding pass" button). So, each time, I had to check in at the desk at the airport. I also had to pay for checked bags at the desk, bc usually that's prompted after checking in on the app. And this time, even after we'd checked in at the desk, the app wouldn't load our boarding passes. Yes, I've done steps 1-4 of troubleshooting.