ZOOM H4n Digital Recorder is not recognized by High Sierra

ZOOM H4n Digital Recorder is not recognized by Audio Midi Setup on High Sierra 10.13.6 with H4n in audio interface mode (pg 33 of it's manual). Any fixes?

There is no driver from Zoom that I can find for this product. Worked fine in past version of Mac OS

(tried to move this post to High Sierra category. says I'm not authorized to move to that space.)