RE220 connection trouble
Range extender arrived today. Opened box and followed all instructions to get phone app, log in, and begin process of set up. Got all lights to come on when extender was powered near the router (actually a Comcast cable modem/router). Moved the extender to the spot it should enable coverage through the house. All lights came on. Could see in the app the home wifi network. Could not see in the app wifi list the extender network. Got to the app asking to join the extender network and it could not. Multiple tries. Turned off Cellular Data per suggestion in instructions. No change. Rebooted exender. No change. Tried to Detect all devices on the home wifi network using the app, but it found none even though the cell phone with the app was logged into the home network along with three computers and one other smart phone. Now what in order to get the extender network visible and connected to the app?