Mine is working fine, but my wife was on the treadmill for 20+ mins this morning - and the following happens. She used the workout app, it shows the time, calories burned, average HR, distance traveled, and all the other relevant info. But on her Circles 'Activity' monitor it shows zero exercise. It didn't move one bit. I rebooted her watch, but no action. Checking the Activity app on her phone also shows the workout under 'Workouts' with all the details, but doesn't have any exercise listed on the chart above it. Any thoughts?