Why has my RE450 stopped pairing with my Virgin Router. Lost the 2.5 & 5.0GHz leds as well as the pairing button. My phone detects them separately as unsecure but I used to see EXT at the end of my router name. This has now disappeared completely. It's like the extender is not detecting the router. Tried the usual reset stuff. Very frustrating as the Virgin hub has a poor WiFi and the extender gave me a better streaming option. The TP link update 2 days ago hasn't got something to do with it has it?