Can't select input/output per track

Hello everybody,

I have a strange problem. I bought myself a Rodecaster Pro for my new podcast but when I open a new multitrack session in Audition, I can't change the input/output per channel. Simply because I don't see those two little arrows in the track! I found a tutorial where they said you had to zoom in on the track to see the arrows but for some reason that doesn't work for me. I also added a screenshot I took from a Youtube tutorial so you guys can see what I mean.

Anybody who can help me? Thanks in advance!

Greetings,

Vince