Help: iDJ3 controller and macbook pro..not working properly

I just purchased CrossDJ and am using it on my Macbook pro. all drivers are up to date.
Problem 1: The program will not let my iDJ3 be the output device... huge problem as I play clubs and need to plug into the house mixer. it's making me use my macbook's built in headphone jack...
problem 2: the master volume control knob wont work... doesnt control anything...
same with the cue volume knob... I cannot use headphones to listen to deck a or B.. therefore i cannot hear what i am mixing.
EXTREMELY FRUSTURATED, ANY HELP WOULD BE AMAZING
Problem 1: The program will not let my iDJ3 be the output device... huge problem as I play clubs and need to plug into the house mixer. it's making me use my macbook's built in headphone jack...
problem 2: the master volume control knob wont work... doesnt control anything...

EXTREMELY FRUSTURATED, ANY HELP WOULD BE AMAZING