Hi, TP-Link Support,

I run Deco mesh with M9 Plus and M5 units, in Access Point mode. Deco Main Network broadcasts 5GHz only, Deco Guest Network broadcasts 2.4GHz only.

I have three TP-Link Kasa HS103 Smart Plugs. They can only use 2.4GHz. They are connected to Guest Network.

The problem: Deco app reports HS103 Smart Plugs connected to Main Network.

I have that setup for a long time and I can't be sure when this reporting issue started. It may have been recent after M9 Plus 1.6 firmware update or like that for a while, I can't tell. 

When I turn off Guest Network, all three Smart Plugs go offline. As they should. When I turn Guest Network back on, they come online but still reported under Main Network.

I also have an older Ecobee smart thermostat that also only uses 2.4GHz and is connected to Guest Network, too. For Ecobee, Deco app correctly reports it on Guest Network.