Hi. I am trying to set up my son's i-pad on the Koala wifi, but the device just doesn't appear on the list. It shows all 4 other devices in the house, but not his i-pad. I have restarted both the Koala box and the i-pad, but nothing. I have tried putting the Koala password into the i-pad and it just says "incorrect password for Koala". Help!