No sound from usb audio input after mojave update
I have been working to "digitize" my record collection and cassettes on my Late 2015 27" iMac . I use the Behringer UFO202 usb audio interface for audio input and GarageBand to record the audio. After the Mojave update, I get no sound through my speakers and GarageBand doesn't seem to acknowledge the audio but when I go to system preferences, I can see in Sound that my computer is recognizing the USB input and the input level does indicate that a signal is coming in. Before anyone asks, Yes I have checked the input settings in GarageBand. Help please!
MacBook Pro (Retina, 15-inch, Mid 2014), iOS 8.3