FIFA is under fire after many fans trying to enter Khalifa International Stadium for Monday's match between England and Iran were unable to access their tickets due to problems with the ticketing app.
According to Yahoo Sports, tickets were disappearing from people's accounts in the hours before the game, which meant they had nothing for gate attendants to scan.
FIFA issued a statement confirming the problems with the ticketing app.
"Some spectators are currently experiencing an issue with accessing their tickets via the FIFA ticketing app," FIFA said in a statement. "FIFA is working on solving the issue. In the meantime, fans who are not able to access their mobile tickets should check the email accounts they used to register for with the ticketing app for further instructions."
The England-Iran game is just the second game of the World Cup tournament.