I have recently installed the Android TP-Link Tether app and it doesn't recognize all of my routers. I have a AC2300 as a main router and 2 WDS bridged units (C7, C8). The Tether app does not seem to find the C8 and I don't understand why. It is set up as a bridge/extender connected to the 5GHZ band with just the bare mininum of changes made to the stock configuration in order to extend the signal through the house. Any suggestions or advice on something I may have missed?