When I go into settings on my IPad and select the WIFI at my business it shows a check mark like it is connected but the wifi symbol in the upper left corner is absent. The device is not connecting to the internet. Other devices in the building are connected to the same network. I have turned the wifi switch on and off. I have powered the device on and off. After I turned the IPad back on the message tells me to enter the password for my Apple ID. I know I am entering the correct password but I always get the error about "verification failed" "error connecting to Apple ID server". Can someone help me/