Im from Indonesia. My instinct (APAC Version only asian lenguage) trouble about sleep tracking. Good heart rate tracking every night, but when open my garmin connect in the moring, i always trouble about sleep tracking "(Your device does not monitor advanced sleep) at sleep garmin connect menu". Thanks.. im sorry my English is bad.
Mine has problems, too. I contacted Garmin Tech Support and after several emails and forwarded screenshots, they opened a ticket. I encourage other Instinct owners to do the same and maybe we will all get a fix. Otherwise the Instinct is a perfect ruggedized smartwatch. Nothing else comes close for value.
Call or email Tech Support about the sleep tracking problem!
I wear the Instinct all the time and was hoping that sleep tracking may improve but I don't think its got it right once since having the device. Every morning I use the connect mobile app to change the sleep and wake times (sometimes it gets one approx right but never both). Looking at the movement in the app (swipe left) it looks pretty obvious to me what time I went to bed and what time I got up so for me the algorithm needs a little tweaking.
I also get the error "Your device does not monitor advanced sleep" and I think it does this when it thinks I am still asleep as if I do it again later it tends to work.