I have had my Active 2 for several months, and have found that it does not correctly track my elliptical workouts. It is really quite erratic, but my heart rate shown during the workout is usually low compared to my actual heartrate, and calories burned is also usually low compared to other watches and machines I have used. One day it actually said I burned 0 calories, even though it did show a heart rate and counted steps.
I sent the watch in, but it was returned with a note saying that it tested out fine.
I have done the updates and reset it several times.
I hope this issue is being addressed, because I've read numerous posts from other community members with similar problems.