Thousands of supporters with tickets for today's World Cup matches, including England and Wales' Group B openers, face an additional headache after FIFA's app crashed - raising fears of many being locked outside stadiums when games go ahead.
Pictures from outside the Khalifa Stadium, where England face Iran at 4pm local time (1pm GMT), showed hundreds of fans queuing for printed tickets at a "resolution queue." A FIFA spokesperson said it was working to solve the issue with the app.
Since early this morning supporters said that their tickets had disappeared off the mobile app, while any user who has logged out in the past 24 hours found themselves unable to log back in.