I just got delivery of this camera and being so new it's not yet supported by INDI. The color version, which I also have, works without issues. I was wondering what it takes to add support for this camera and if it is planned for the near future. I can offer testing with a real camera is there is a nightly that should work with this new mono camera.
It is totally dependent on whether the ASI SDK supports it or not. The nightly builds use the newest SDK available so if that doesn't work, then we need a new one, but I'd assume ZWO would have added that a while ago already. You can check the SDK version your driver uses from the Info tab of the driver panel, it should show 1.16.3 for the current version.
This is totally my bad. I was testing on an older version of KStars (3.4.3) and that was causing errors. My imaging rig (Raspberry Pi 4) has KStars version 3.5.0 with SDK 1.16.0 and I can confirm that the camera connects and at least takes dark frames. Building my dark library now....