Producer 7 software problem with sound settings to mixer

I am using MixVibes Producer 7 software See picture file attachment. Iam using U46DJ sound card with my behringer ddm4000.
I got my behringer ddm4000 headphones input/output to work.
Problem: I can not hear the PFL also known as CUE button sound out of behringer ddm4000 channel 2 the other channel 1 using PFL also known as CUE button works.
DJ911 PRODUCTIONS THANKS.
I got my behringer ddm4000 headphones input/output to work.
Problem: I can not hear the PFL also known as CUE button sound out of behringer ddm4000 channel 2 the other channel 1 using PFL also known as CUE button works.
DJ911 PRODUCTIONS THANKS.