USB B Recording Too Quiet - QU32 to iMac

I’m new to this board but have worked on similar ones (PreSonus). I have been trying to record to our iMac, it doesn’t have a line in 1/8" port. I tried the USB B cord, but the recording is so quiet. It doesn’t even light up the input, if you record you can faintly hear it with the volume cranked. How can I get it louder?

I’ve tried 1/4" to USB cords but they produce feedback, so I’ve run out of options and need to go back to USB B.

https://support.allen-heath.com/Knowledgebase/Article/View/1121/201/-18dbfs-and-metering-in-qu-and-your-daw

https://community.allen-heath.com/forums/topic/recording-level
https://community.allen-heath.com/forums/topic/usb-recording-very-quiet

DC