My iPad was charging and I wanted to go and check my Instagram. So I unplugged my charger and went into Instagram, but it would not load so I closed it and then I looked at my battery bar and it said it was charging. However, it wasn't plugged in. I tried rebooting but it would not let me.

The next morning I checked the iPad and while it was unplugged it said it was charging at 69% just like last night.

What might be wrong if I cannot access any apps requiring Wi-Fi but other offline games and apps work?