I have athom smart home 4 gang (home kit) wall switch.
after configure the network I added the device and he lost connectivity.
try to reset it using the power -> no luck.
try to delete the device from HomeKit in my iPhone and reconnect it --> same , he can't see my device.
try to search the wifi in my iPhone to setup it again and I can't see the switch wifi.
after taking off the power supply the wifi led on for 2-3 sec and go off.