I moved into a new house yesterday and received my QuickStart kit today with the Hub 3.. After connecting everything, calling the number to activate it and receiving the text saying it is now connected, I'm still getting no WiFi. I've reset numerous times, sometimes I will get the two green lights to indicate that everything is working but they go off after around a minute (and even when they're on, there is no connection), leaving a solid white light. I've disconnected and reconnected all cables, they're all in properly in the right places. I've tried calling, but every option I choose leads to 'sorry, our call centres are closed due to coronavirus, please refer to the website'.
If you read as many posts as I do you would realise that a large percentage of times the initial 'activation with text message' hasn't actually worked and people have been able to go back onto their previous Hub. This would not be possible if the activation had worked properly !!