Single pole no longer works

Hi, I have a few caseta’s (caseti?) installed around my house. They all work great... except for one.

its the one that is connected to my outdoor porch light which I rarely use. It was a three way but I converted it single pole as per the instructions. It was working great for a couple of weeks and then one day I came back to see that the lights were flickering on and off slowly (about one or half a hertz). So I turned it off and didn’t think twice about it.

then the other day I looked at the casita switch for this light... and the series of dim green lights (when off) where now dark. Of course toggling the switch did nothing. So I tried pulling the tab that turns the thing off completely and pushed it back in. At this point, the series of green lights turned on: first the most bottom light, and then step wise up.... until the final topmost light - which did not light up. Then the green lights are all dark again and the switch doesn’t work... still.

Any ideas? Cheers,

It sounds like you have dropped below the minimum load threshold. Try replacing the bulb(s).