If you want to change your password to log in to the NIU APP, you can follow the below steps:
1/ Go to the tab 'Me'
2/ Go to 'Settings' in the upper left corner
3/ Go to 'Change Password'
4/ Click 'Send' and have the code sent to your email address or mobile phone number
5/ Insert the code you received
6/ Create a new password and repeat it
See video attached.