Dear friend!
If the password for the admin user is forgotten, reinstall the U2000 to retrieve the password. There are no other ways to retrieve the password. Therefore, keep the password secure.
If the user is not a security administrator, reset its password as a security administrator. If the user is a security administrator (not admin), reset its password as another security administrator.
For more information, please click:
U2000 User Password Is Forgotten
Thanks!