I've had my hub 3 for several years and last night suddenly WiFi went offline. Tried everything absolutely, tried connection issues on the hub settings and says IPv4 not valid broadband down. I need my internet as soon as yesterday please !!!
Well, they solved my problem after about 15 minutes and some if i had to do myself - reset with a pin on the router, disable my wifi, apparently all of my SSID settings had been wiped and they couldn't do anything from their end until i carried out a manual reset because a hit had been sent and wasn't received by my router ! Then a problem suddenly came up in my postcode area. But thank you for helping !