yeah the responses ive had from access support are very non-committal regarding fixing this issue ("were working on it") type of stuff. Theyre still selling them for $3700 new in Australia.
Ive owned mine for years but recently had to upgrade to a new macbook with only option catalina.
Only option as far as Im aware is to use it as a regular/old school midi controlled synth. Im still using the ti plug in to access my patches etc & running audio out from the synth into my sound card to record it in ableton.
some minor latency issues but still usable . just no audio via usb.
Just for fun i did load ableton onto my daughters school laptop running windows 10 & hooked up the virus to test it - no issues at all.
caaaarn access , get your shit together!