How can I know it the Audio Driver was installed succesfully in DDJ-RB?

Hi:

I followed instructions regarding the Audio Driver Installation for a DDJ-RB Controller (after activating my license and started the rekordbox software) but it seems something happened during installation, and a very small window appeared showing DDJ-RB only (a very small window, by the way).

HOW COULD I CONFIRM IF THE AUDIO DRIVER FOR DDJ-RB WAS/IS INSTALLED IN MY REKORDBOX SOFTWARE? (I have a Windows 10 PC, 64 bits)?

I would appreciate it if you could answer as soon as possible. Thanks in advance