After one week of use, I first found there is not Intensity Minute card shown in My Day screen, not even the accumulated intensity minute in the last 7 days page.
then I found not record of intensity minute recorded for last 3 days though I walked continuously for over 2km on one day and the no of steps broke all records of the first week.
googled the issue and found it was a known issue for ver 3.x but I am now using 4.x.
no record of intensity minute shown in Garmin Connect web too.
any one knows what happened?