Do you have multiple access points? The switches may be connecting to the wrong access point and are using a marginal wifi signal. They don't always pick the loudest SSID, often they pick the first...

Often when this (intermittent connection issues) starts happening power cycling the router and APs will sort it. If it does you'll probably need to schedule it regularly. The kasa local API uses...

You didn't ask the switch to stop trying to reach the internet, you asked the app to stop allowing you to connect to it remotely. The switch needs to reach an NTP service before it can run rules with...

Sounds like wiring or some other issue unrelated to the switch (if it is an HS200) as it's a simple relay. You could try bypassing the HS200 temporarily to confirm.

Belkin wemo uses an open protocol for their plugs and switches API. For bulbs hue and lifx do as well. Homekit is open so anything that supports homekit supports an open API.

@AMIS The HS100 is just a relay contact on the line (hot) wire, it's either on or it's not. It is possible the HS100 board is fried, but unlikely if it's both. It might be a problem with your home's...