Peter,
Big Sur 11.5
We just tried it with our current build (5820+) on macOS Big Sur on our systems and it works fine. For a problem like this, I suggest contacting our support folks at:
By email: support@camerabits.com
By phone: +1 503.547.2888
Hours: Mon-Fri, 9:00am-5:00pm [PST/PDT]