Unbinding the scooter means that you will no longer see the scooter in the APP.
It allows other people to become the new owner of the scooter.
Follow the below steps:
1/ Open your NIU application and go to the 'Me' tab.
2/ Select the device you want to unbind.
3/ Select the red button 'Unbind' at the bottom of the page.
See the video attached.