I have about 15 things connected to my smart things hub v2, most of which are light switches. Others are, garage contact sensors, outlet switches, and Philip hue bridge.
One thing I noticed was that a few of my devices (light switches) sudden became “unavailable” on the classic app. These devices where mainly the ones that I haven’t turned on for a long time. Perhaps months. I tried to turn them on via the app, but nothing works. I logged into the smart things api configuration homepage and the log shows online. What I did noticed was, when I physically go turn on the switches, after a minute or 2, it becomes available again and I can control it via the app and with Google mini.
Is devices going dormant normal for smart things after long inactivity?