DAPE-BRNO:
Same here. On the Activities page the data is missing but if you look at the detail of any activity, the information is there. So clearly it has nothing to do with uploading since the HR data shows up for the activity when you are looking at the specific activity. But when you view the Activity page all you see in Avg HR and Max HR is '--'.
It would be nice to have this fixed or know how to fix it.