@B.Will I tried to do this and my bulbs start to blink/flicking I tried every combination possible and nothing works. Maybe my neutral wire is not good? how can I test that?

@MikeP Thanks for your help. I gonna try.

I tried to install my HS 200 on the bathroom, I follow al the physical installation like the TP show me and the smart switch wroks and I can configure the wifi and use on KASA APP but it not turn on...

@MikeP I think the white wire is the neutral because I saw on the old switch, I tried in 2 switch HS200 and have the same problem. Do you have another tip for I try?

@Fabiohcd Video 2

@Fabiohcd Video 1