I am trying to set up my Chromecast and I am getting a message saying Chromecast setup successful, however we cannot discover you Chromecast on the network. In order to cast, connect your mobile device and Chromecast to the same network. Also ensure AP isolation is disabled on your Wi-Fi router. Both Chromecast and phone are connected to the same network but it won't locate my Chromecast. I looked on the back of my Exede Modem/Router combo and I don't see anything remotely close to an AP Isolation or UPnP setup. Can you help me with this???