You haven’t completed the setup on the device manufacturer’s app. Before adding it to the SmartHome+ app, the device must first be installed and configured using the manufacturer’s home application. Refer to step 8 of the step-by-step guide shared on
.
a. For TP-Link Smart Plugs, be sure to select KP125M (under Matter Smart Plug) in the list of available plugs on the Kasa app.
b. KP125 (under HomeKit Smart Plug (Wi-Fi)) will not work.