Try this first.
- Get the scooter rolling before pressing the accelerator button. (It needs to travel 3 km/h before the accelerator works)
- Make sure the scooter is turned on and fully charged.
- Check so that the brakes are released.
If that didn’t work, try to end the ride and report the problem here: https://gosparky.zendesk.com/hc/en-us/requests/new