Vortex Sound Research

I got a new Mac (Intel chip) with Big Sur but can't find a MIDI interface that works with it. I purchased a MOTU Midi Express XT a few weeks ago in anticipation that the drivers would be upgraded but MOTU has no timeline for it (I asked). I'm about to return it. It seems other brands are facing a similar issue. Any suggestions? I am not planning on changing the OS to an earlier version.