@Wayne-TP Hi, I don't have solid red light. It double blinks and then turns solid amber a while and then blinks red again. yes, after reset it start switching between red and green like it should....

I'm currently on my second Tapo doorbell that won't work. My first doorbell worked just fine for a couple of months. Then I changed router (5G router) to the same model just a different unit – ZTE...