Multitrack Recording records only mic 1 and ignores the others!

When I try to record in Audition in a Multitrack session with 3 microphones, only mic 1 is recording, but sends signal to all 3 tracks! 

I am using a Studiolive AR8c as interface for the mics.

I have selected Studiolive AR8c in Audio Hardware settings , I have selected input for each track, mono mic 1, 2 and 3. I have armed the tracks.

I am working on a Macbook pro with 14.3.1. and Audition 2024

When I tested everything on my older Macbook pro it worked, so maybe it is a software problem?

I would be very greatfull if anyone could help! 

Here is a screenshot :