I have a new (3 days) vivomove HR and am struggling with it staying the correct time on the hands. Digitally is correct, I have calibrated multiple times and it fixes it temporarily (longest about 5 minutes) then it will revert to 1 hour behind, then 2 hours behind or some random time. So frustrating! I thought maybe location on phone but that’s on always for Garmin watch. Any ideas? Thank you!