As a rule, the fault here is that a plug is loose somewhere or that it fails due to a loose connection.
Something small that is preventing the scooter from flowing electricity in all the major parts. For example, it can also be due to a missing blade fuse / not activated main fuse.
The scooter is activated, i.e. the front light lights up, the LEDs light up but the engine does not turn: 1. The side stand
must be raised for the throttle to work. 2. The plug connections on the control unit must be checked here.
Unplug individually and reconnect. Also check the wiring from the throttle grip - this is the cable from the throttle grip
come follow and check.