Recently over the course of the past month or so I have noticed that some of my Leviton Z-wave plus switches/dimmers have been missing. I noticed this because the automation’s I had setup would just stop controller the light and then I look at the Smartthings app and the device was completely gone. I reset the switch and re-add the device and everything is fine. This has happen to 4 devices already and I am not sure what is going on. Wondering if any else experienced this problem.
This is something support would have to look at. Drop them a line.