I am trying to add a range extender to my system. I got the range extender connected and both the range extender, and the repeater connects fine. Within in a hour or so the repeater will fall off of the network, and will be in a searching state, but the range extender is still connected. I have moved the extender closer to the hub and, ran the network optimization again, and the repeater will never get reconnected. I have also reset the hub and still no luck. I have emailed Iris support but have not heard back yet. Any thoughts why the repeater will not get connected back to the hub, or is it really needed since the range extender is connected?