@Tony I did as suggested - I first searched and noticed a new firmware was available for my TP-Link devices, so did the update for each. I them deleted all of them in SmartThings. Things straightened...

@Tony Thanks - I'll give that a try. As I said, I can turn my lights on-and-off, but I don't like seeing "double entries" for each.

I've had 2 Slim Edition plugs (from KP100KIT) and 1 HS105 running very successfully for about 6 months. I operate them via Alexa (Echo Dot) and my SmartThings Hub. I recently added a HS107 "double...