A2Landlord I've been struggled with this issue for while and finally got
them all working as of last three weeks ago. I have 4 thermostats and 3
sensors.1st thermostats -> I've asked for a replacement -> they did
replace -> worked2nd, 3rd and 4th the...
Got the same issue, all 3 sensors went offline at the same time. I've
tried all suggestion remove/reset/re-install..etc still no luck. I've
contacted Nest support, till tier-2 support still no luck. They decided
to send replacement for me... now wait...
