How to coect outboard gear to Studio 192 Mobile?

Needs some help, I'm trying to coect my outboard compressor to my new audio interface - Studio 192 Mobile. I have 2 additional inputs and 4 outputs. Coected interface audio out 1 to input of compressor, created new mono output in I/O Daw settings, choosed new output in mixer and when i'm trying to play this track i still hear it in right chael and compressor doesn't receive any signal from interface. When i used my old interface all worked fine. Please help.