This morning my normal 5800 step walk has recorded just 1800 steps. It's normally around 55 minutes but only 20 mins has registered. I can manually add the walk but I can't get back these lost steps. I am part of 2 step count challenges, and there's no way I am going to now meet my step count for the day, ruining a long run of meeting my goal. It's not a sync issue as the steps have synced, they are just not recorded on the Vivosmart 4. I am so annoyed. Is there any way to rectify the lost steps, or why this might have happened?