"People were getting a blank website not loading properly.
"Some people were getting through all right, which is why we decided to push pre-sales back 45 minutes to 2pm in order to make it fair for everyone and to give the agent a chance to get on top of the problem."
Mr Brake said the arena had a seating capacity of 5000 a day for the event and was not yet fully booked.
It is the first time that Auckland has been included in the PDC World Series of Darts and it will be televised live worldwide.
PDC is extending the world series to have events held in Dubai next month and Japan in June and during August in Australia - in Perth and Sydney, and then in Auckland for August 28, 29 and 30.
Other PDC stars coming to Auckland are Adrian Lewis, Peter Wright, James Wade, Raymond van Barneveld and Stephen Bunting.
In the tournament's first round, they will be drawn against eight Oceanic qualifiers.