Hi, I do not know what else to do. Original installation from an electrican. I thought to remove old switch and replace as I saw the neutral all connected together. I tried all combinaison I could with the wire with no success
Setup that should be good but did not work
using the white and black wire from the old switch to black wires from the HS200
Green connected to groud
White connected to the white neutral bundle
Thanks for your feedback and help!