Your username is your Drivers Licence # (e.g 12345678) and password is last 4 digits of Drivers Licence # (e.g. 5678). If your Drivers Licence # included letters (e.g 1234ab) and password is last 4 digits of Drivers Licence # (e.g. 34ab).
If this is your first time logging in on this device, tap the + in the top-right corner. Otherwise, tap on your name in the Recent Drivers list.
Enter your driver credentials, and tap the green tick in the top right corner.