[Solved] DDJ-RB Issue - controler wont do anything even if its connected

Hello,

I just bought my first controller and its not going well. First of all the issue: After installing Rekordbox(newest version), downloading drivers for DDJ-RB I connected the controler to my pc all of the buttons flashed nicely and then only the FX(blue light) and HOT CUE(red light) button remained lit up. Only the master level knob seems to do something when i try to play any song(adjusting sound). After trying other buttons it seems only the MASTER(very middle) button can be lit up after pushing it(though it doesnt do anything) and SAMPLER button on the dpad can be lit up swithing from HOT CUE mode.
From this issue comes next one, even if DDJ-RB is connected with those few buttons lit up it wont do anything on Rekordbox(apart adjusting sound with MASTER LEVEL)

I really hope this issue can be fixed, because right now its just expensive sound level adjuster.

My gear: Windows 10 Pro 64bit
Latest firmware update for DDJ-RB is already installed.