Several months ago, 3 outlets using the Generic Zigbee Outlet driver began showing on my daily Device Watchdog report as no activity. These 3 are all in always-on, so no change in status. I've been using DW on my C4 for more than a year with these outlets using the Generic Zigbee Outlet driver all along. After showing up on the report, they all still operate from the menu and often show up as repeaters on the Route Table.
This past week, I wondered if these 3 were all the same model. Yep, Sylvania 72922 SmartPlugs by Ledvance. Research here in this thread and others pointed to a driver issue. In another thread, someone posted that using the Generic Zigbee Switch driver would work. 3 days ago, I changed the driver on two of them as a test and now Device Watchdog no longer lists them as inactive without a status change. I was going to post this asking @mike.maxwell to check and this seems like a good place.