Anyone got a TC Clarity M to work?

I tried to use my TC Electronics Clarity M to work with Cantabile, but not having much luck.

The plug-in loads and connects to the hardware, but it seems stuck on 5.1, with no means to switch it to stereo. Also I can only get it to register levels, or follow Cantabile’s transport, if I allocate the stereo input to all 6 plug-in input channels.

The sample plug-in works perfectly in Cubase, so I guess there’s some extra level of communication going on that I can’t access in Cantabile.