I have a HS200 which has been working but suddenly will only briefly turn on a light. As I initiate from my phone or manually, the light turns on (switch clicks) then immediately turns off. I deleted...

@B.Will Thank you

Is it possible to use one Kasa HS210 on an existing 3-way setup with another standard 3-way switch so that I don't need to purchase 2 HS210's for the same circuit? Thanks in advance, Dan