Board doesn't start

Several reasons this could be happening, dead battery, board is too cold, board could be dead.

Dead on arrival

not totally clear why this is happening, but it is.

Ghosting

The onewheel doesn't stop when the board is disengaged. There are several videos of this happening on reddit and youtube.

Footpad sensor issues

This is related to Ghosting, as far as I know Future Motion will send you a new footpad, meaning its likely not a software issue but a hardware issue.

Onewheel won't charge

Could be several reasons for this, but the main cause is not clear.