So I have had the watch for a few days. Today I switched off the Bluetooth sometime before 9am to save battery. I switched it on at around 8pm and synced and noticed that the heart rate was not mapped to the graph. Hence I also do not get any account of body battery. The heart rate was still ticking when the Bluetooth was off. The phone synced fine because an activity I did in between did show on connect.
Why is that? I did all the reset, reseted the phone as well as read installed the app. But that gap is still not graphed.