There are two ways to modify account password.
Webpage
1. Sub-account Manage - User Center
2. Security - Reset Password
3. Verify according to the mobile phone number or email number used in the previous registration
4. Reset a new password, then confirm, click Reset Password
5. Your password has been changed
App
1. Click User Center at top right corner
2. Change Password
3. Verify according to the mobile phone number or email number used in the previous registration
4. Reset a new password, then confirm, finally click Submit