I installed this 3-way switch (my 3rd so far) and it did not work right away for some reason. I decided to take a break and re-wire it later, but within a few hours it started working. That was last night. Today it doesn't work. I can see it in the app, but when I try to turn on the light it doesn't come on. The app shows on for about 2 seconds and then off again. Do I have a bad switch??