I had to wait for a couple days to be sure what have been fixed.
-fixed battery draining issue
-the morning (first) sync works well, I get every data collected during night time (sleep data, hrv, stress, sleep score, respiration)
-fixed HR measureing problem (measured below the actual with 10-20 bpm, now checked with tensiometer, SpO2 gadget and does measure ok)
BUT: in SMARTWATCH mode does not refresh regularly the HR, 3-4 times in a minute. When I want to check my actual HR need to open the heart rate app on the watch to check it.