alt out is not a good choice
the livestream needs some extra mikes not used live as the organ is already loud acoustically
and we tweak the balance of everything specifically for their use
You do realize the ALT OUT can be routed to ANY mix out of the mixer.
If I’m not mistaken your using MIX 7 8 for live stream.
Go to the IO routing menu, under the surface tab, ALT OUT select the mix you want the
ALT OUT to be.
The ALT OUT level knob under the headphone level knob.