If it were mine, I’d open the deck (10 allen bolts around the perimeter of the deck, under the rubber), then unplug the main battery connection and plug it back in. If that didn’t work, then look for fuses between the battery and the scooter. This would also be inside the deck. I’m not sure there is an in-line fuse, but if you’re in there anyway, it would be a good thing to look for.
Definitely check with Apollo first, to make sure it’s ok to do this, this is exactly the sort of thing that can end up voiding warranties on most electrical devices.
-Paul from ESG