Zoom Live Trak L8 drivers not recognized by Zoom workplace

I have done over 200 Zoom workplace podcasts using a Zoom Live Trak L8 audio console with no problems.    Within the past two weeks, Zoom Workplace is reluctant to recognize my L8 drivers.   It defaults to internal mic and headphones.

I now have to open and close Zoom workplace four or five times before it will grab the L8 drivers.

I have talked to Zoom electronics and they insist that the L8 is compatible with Zoom workplace.   Zoom workplace support says the L8 is not a compatible device.

How is it then that I have used them for over two years with no trouble and suddenly there is a complication.  If I have Adobe Audition open and then open Zoom workplace,  Audition drops the L8 drivers and switches to internal mic and earphones.

I have the L8 set a default in Apple system settings, but as soon as I open Zoom workplace it defaults to internal mic.

I have downloaded new drivers for Zoom L8 and the Zoom Worrkplace app.   I'm going crazy with this..