HS210 toggle issue on 3 way switch
I installed one HS210 3 way switch yesterday in a box with a neutral and left the other dumb switch (that has no neutral) alone. I am getting power to the HS210 and can add it to the app. However, I am running into a problem. When I turn the switch on from the app the light in question turns on. But within about 25-30 seconds, the app changes and indicates that the light is off even though it is still on. Is this a wiring issue related to the legacy switch that I left in place? My understanding was that I could one HS210 along with a legacy switch in a 3 way switch configuration. Thanks for any help!