I have other timers and a hub, but I just got a new XD timer to add to my system. I chatted with support for a while to find out that in order to add an XD timer to a hub you have to remove the hub from your account and add it back in, then you can add your XD timer. But that means I have to add all my other timers again… every time I want to add a new XD timer. That is unacceptable!