Wyze switch for gas fireplace

My fireplace switch has 3 wires; white, green, and red. Assuming that white=neutral, red=line, and green=ground, There is no “load”. When I connect the three, the switch doesn’t work at all, not even as a dummy switch.

Is the Wyze switch expected to work as a smart or dummy switch with just 3 wires?

Have you used a tester on the wires to see how they are configured? There is normally a black wire. Does the switch go straight back to a breaker? Or does it connect into a fireplace control box?

I don’t have a gas fireplace, so I don’t know if they are wired the same as a light switch.