I am trying to replace a single pole light switch.it has one black wire(verified as hot) and one white wire (verified as neutral). The switch controls power to the fan / light. When switch is on, the light and / or fan will work based on its controls. After connecting white to white and black to 1 black wire on HS200, I am able to setup switch on wifi. Problem is it wont turn on the fan / light. What am I missing?