[vatueil]

Perhaps the statement was referring to the telephone hotline, used as a backup means of reporting results, which was apparently overloaded with calls.

[jandrese]

The statement was about people waiting for hours for the app to respond when they tried to upload the results, and some giving up and going to bed after it failed repeatedly.

[gnicholas]

Yep, the phone line was apparently overloaded, but that still doesn't answer the question of what happened with the app?