I have been using my VivoFit without any issues until recently. I use the HRM and like to see both resting and active calories burned (like it shows on my iPhone app). However, all of a sudden, it is not calculating calories burned on my Mac Garmin Express under "Activities". It will show the duration of my activity and my Heart Rate Monitor is working alright. It just isn't showing calories burned now. I can only see that on my iPhone app. I've tried removing the activities from the dashboard and putting it back on. Also tried closing the app and opening it back up and syncing to no avail. Advice?