This app is horrible and should not be used by anyone. PLEASE DO NOT USE MOBILE TICKETS! Either pick your tickets up at Will Call or print them off yourself. I recently purchased tickets to two events and chose to use their app for my tickets. However, on the eve of the first even, the tickets will not show up in the app and I have no idea if I will even be able to attend the event now or if I am just out a few hundred bucks... I am not able to print the tickets from their website now because I chose mobile delivery. I have no idea why there is no backup for instances such as this, but it wouldn't surprise me if Ticketmaster sold me these tickets, took my money, then resold the tickets to someone smart enough to not use the app.