Nope. By design, there's no way to manually add steps.
I see you're new here so I assume you have a clock issue and that's why it reset to 0. Somehow, your vs must have thought it was midnight.
Make sure your vivosmart is set to update from Mobile and not manual. Also, in Connect on the web, go to the head & shoulders icon on the left and choose settings, display settings - and make sure the time zone there is correct.
