DDJ-RB : No sound comes out of speakers

DDJ-RB on Windows 10 (Dell)

When I use the app it does not allow me to have the master in the speakers and the headphones'(cue) in my headphones.

How it is working: is that either both master and cue come out ONLY from the speakers OR, ONLY from the headphones.

I cannot set up the INPUT whatsoever, there is no options given to e.g. set it as my speakers.

I do have the DDJ-RB ASIO driver and volumes are all up.

What do I do?