I have a PD-6WCL Dimmer Switch. The switch will not turn on the light. I see the green LED on the switch move up, but the light does not come on. However, I can ask Alexa to turn on the light and it comes on. Even with Alexa commands, though, I get a quick flash on the light and then it comes on full. I did not always have this problem. It started around 10 months after installation. Any help would be appreciated.