Input Level too high

[Henryman]

I have installed MixPad on a MacBook. (Latest IOS version). Now I connect the Mac via USB B cable to an Allen&Heath QU-24 and select the QU-24 channels 1 to 24 for track 1 to 24.

For tracks 1 and 2 I get a completely normal input level. For tracks 2 to 24, there is only noise.
The gains on the mixer are all set between -03 and 28 dB. The noise does not go away when I reduce the gain.
Interestingly, on the same Mac, the SW Garage Band works fine with the same connection.

Does anyone have an idea what this could be and what I can do to record with the MixPad?

Thanks for your help

[MakubX]

You could try to reinstall the program and see if that makes any changes but I'd suggest sending a support ticket for this one along with your setup: https://www.nch.com.au/support/supportcontact.html