Mine just turns off even on flat ground when fully charged and ejects me forward. Started happening after about a week of use, just as I was getting comfortable

Mine just turns off even on flat ground when fully charged and ejects me forward. Started happening after about a week of use, just as I was getting comfortable, but it's just completely unusable. Maybe I'm a bit too big, or riding a bit too far forward or something, I don't know, but I feel a bit vindicated now. What a waste of money, I'm glad I wasn't injured worse than just some scrapes and bruises.