Can only hear unprocessed sound from external cab?

Help please. I am probably just doing something stupid. However, I am playing my powered toaster to an external cab. I am connecting the speaker output on the back of the Kemper to my FRFR monitor. I can hear my guitar in the monitor but it is not processed sound, just direct “clean” guitar. I have the “monitor output” set to “git + processing”. When I use “git studio” mode I get the same result. When I switch to “stack” or any other mode the overdrive comes through, but no reverb or modulation. When I use headphones I hear the fully processed sound. Can anyone help me determine how to get fully processed sound to the monitor? Am I doing the outputs wrong? Thanks!

Thanks! Problem solved.