Cannot connect ipad air to wifi. wifi button greyed
Ipad air abruptly stopped connecting to wifi. Wifi button will not slide to "on" in settings. Reset network and reset all settings did not work either. Cannot erase and reset as it wants me to first log on for verification and cannot do so without a wifi connection. Router works fine for all other devices. Connected to ITunes by wire and it says software is up to date.
iPad Air, iOS 8.2, null