
After 2 years of persistent tuning (as it turned out in the end) The single hub failed. Throw away the old lightbulbs. These hub replacement parts are expensive. They are as bright as I want them to be and set up in minutes. I have made sure my Alexa software is up to date. I have relatively new Alexa devices. "Alexa is searching for new devices." That's all. Rename and set up groups.