Presonus AR12 USB - Any Ideas?

[Jock Mirow]

I'm trying to use a Presonus AR12 USB Mixer work with JamKazam. I've got everything down to 44.1 Khz - but JamKazam keeps reporting issues and telling me this isn't set up correctly. I've been doing audio interface work for quite some time and have used this same system for many multitrack recording sessions. Hopefully I'm missing something simple!

Any help appreciated,
J.Mirow