See picture to help understand situation.
I am trying to install a Leviton Decore Smart WI-FI dimmer ina single pole application.
The box I’m working on has an existing 3-way switch working fine. There are three holes in the top which all have ground, neutral and black wires coming from. There are two holes in the bottom, one with black/white wire, and another with white/Black/red (for the 3-way).
The switch I’m replacing has it’s hot black wire coming from a wire nut joined with two other black wires and a white wire.
There’s another wire nut with the remaining four neutrals tied together.
I’m tryinf to figure out which neutral I should tie into the single pole switch I’m installing (it requires one). I tried tying all four neutrals into the switch and that didn’t work. It gave power to the switch but I couldn’t factory reset switch or operate lights, they would sometimes flicker when I activated the air gap.
Any ideas? Thank you!!!