My hub is within 20 feet line of sight from the Zooz switch. The hub found the device, screen went to “taking longer than expected” but it did find the switch. Paired and all was good…Until the switch stopped responding to commands from the hub. The hub shows the switch is online but turning “On” does nothing and the goes back to “Off”. The switch works perfectly when manually operated. I have been working with Zooz tech support and they are saying the issue is with SmartThings I should try moving the hub closer to the switch. I will try that but want to know if anyone else has had problems with Zooz. I am still running SmartThings Classic as I have never gotten a link to upgrade. Any comment will be appreciated.