"Something went wrong. Check your internet connection." Connection is 100%. Everything else - other apps, email, phone browser, etc. - are perfectly fine. "Please sign in to view your tickets" Sign-in screen is blank. Black. No data. Reboot after waiting 5 minutes. Same problem. Tried again. Still doesn't work. Apparently I am forced to use the app, as the venue won't accept printed tickets. But the app won't work. So now what?