@JayCA Did the old switch have 3 screws?

@B.Will Here's a photo of the old switch. Black and yellow wires were connected to it

@JayCA Join the black and yellow together, turn the breaker on and the light should be on.

If not then I don't know whats going on.

Was the orange wire protected with a wirenut?

@B.Will Thanks - could you clarify if I should disconnect the orange wire and then join the yellow and black? The orange wire was not protected with a wire nut.

@JayCA My guess is the orange wire was connected to the switch and fell off when you removed the switch.

The question would then be does the orange go with the yellow or does it go with the black?

@B.Will here's the wiring for another switch in another room for comparison

@JayCA Most defiantly, Take the orange from the box and the black from the box and connect them to the black wire of the HS200.

Connect the yellow from the box to the other black of the HS200.

@B.Will Thank you so much! Joining the orange and black with the black wire on the HS200 worked. 

@JayCA Your Welcome

Glad to hear you got it working.

Giving my post a thumbs up is all I ask for.