I do not see any mention of a reset switch in either the service manual nor the users manual.
If the Emergency Stop switch is set properly, you may want to switch it back and forth a few times in case it is sitting in an in-between position.
Be sure that the battery is fully charged before starting the starting process again. Modern ignition systems do not like low voltages, I have heard.
Is the scooter low on gas ?
The users manual says if the engine doesn't start, try starting again with the throttle slightly turned (1/8 turn).
It may take several tries.
Another guess by me:
Perhaps the tip-over resulted in excess gasoline flooding the cylinder. Place the scooter on the centerstand and be sure that the rear tire is in the air. Try starting with the throttle held open for 3 seconds. Be prepared to close the throttle if the engire starts. Try this 2 times. Then try a standard start.
Remember that your starter motor can overheat so do not use it for more than 4 sec at a time and then allow a 10 sec cool down between trials.
Good luck and scoot safely,