Another 850 fans with tickets in the affected section were relocated to other areas, the NFL said in a statement.
"Incomplete installation of temporary seats in a limited number of sections made the seats unusable," the NFL said in a statement.
The 400 fans will receive a refund triple the cost of the face value of their $900 tickets.
"We regret the situation and inconvenience that it may have caused. We will conduct a full review of this matter," said the NFL statement issued shortly before kickoff.
As well as the fall-out from the seating blunder, stadium officials had to deal with irate fans frustrated at the difficulty of moving between levels by elevator in the 100,000-seat venue.
Super Bowl Fans Seats Refund
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