We have had by daughter's Gizmo2 replaced three times now thinking this step counter issue was a hardware issue. Each new watch would work for some duration (a day, perhaps a week) and then stop. Sometimes it would just be stuck on 0 for the day and other times it might count some random number of steps and stop. To be sure, it is the watch that stops counting and not just the Gizmo app. The last replacement worked for three weeks before it stated having the problem. Appears that powering the watch off and back on seems to fix it for some random duration. Please advise!