I have some in wall switches and dimmers but got my first plug-in lamp dimmer yesterday. Hooked up a lamp (incandescent bulb) and turned it on, added the device and all good. Then about 5 minutes later light goes out, app says it’s still on. Couple minutes later it’s back on. Then off. Etc etc. Now it only stays on for a few seconds. Then off then on, we’ll you get the picture. A pico won’t pair to it. Can’t factory reset it far as I can tell. I’m thinking it’s just plain defective. Thoughts anyone?