@JM1010101 in my experience if the line and load switches (first and last) are installed correctly it can work. However, I did get a "switch is incorrectly wired" note and had to turn breaker off...

I've been DIY ing for a long time with TP link products. I just built a house and there are multiple locations with 4, and even 5 and 6 way. I have drawn out the circuits checked things with volt...