We will be moving soon, and currently have a hive heating system installed in the house we are selling. I use the app to control heating and it is registered in my name with my details. How will it work with the new owners? Obviously don't just want to leave them in the lurch with it. Read on hive website that new owners would have to purchase a new hub, but feel this is unnecessary and just a way for hive to cash in on people moving house....