Midi keyboard problems

Hi, I’ve been trying to use my irig keyboard with BM3 however no sound. I turned on audio midi and tried playing a bank with an instrument loaded in but nothing. I also tried other variations like assigning in notes to the keyboard still nothing. Also when I drag and drop in midi files to scene, still no sound. In the bank when I play the keyboard the pads light up so there is a signal but no sound. Any suggestions?