I have many PD-6WCL dimmers in my house but have a problem with only one. When i turn it on the light just blinks on and off. Very rarely it will blink a few times and stay on. Sometimes it will blink a few times and stay off. Usually it will blink until I turn it off. I have swapped the switch out with known working ones and I get the same result. I have swapped out the bulbs with other ones that are working and I get the same results.When I first installed the dimmer it worked fine for about a week. I get the same results using the switch, the app or Alexa.Any Ideas???