This is my second Venu2. Garmin support staff have put me through several attempts to correct, including taking a script of data to see what happened: no battery saver, getting PulseO2 and respiration data but no sleep data. Tried reset without loss of data twice.
I even have 10.2 as the latest software. And still Venu2 is not performing Sleep data capture.
I also have a vivoactive 3 which , ironically, can capture sleep data if set as the preferred activity tracker while I sleep. The Connect app will transfer the data to venu2 when Venu2 is reset as the preferred activity tracker.
This is a well known short-coming of Venu2. Why has Garmin no put a tiger team of programmers on to this problem to fix it?