Not sure what could be causing this. Could be a MacOS specific issue for INDI. What about SteelDrive 1 focuser driver, did you test that? just to see if it somehow works. Were you able to test this on Linux?
The SteelDrive 1 driver you suggested to try gave me:
2021-11-09T13:10:38: [INFO] Error retrieving data from SteelDrive, please ensure SteelDrive controller is powered and the port is correct.
2021-11-09T13:10:38: [ERROR] getHWVersion error: Timeout error.
What's really makes my head scratch: It works out of the box with TheSky.
What am I doing wrong?
macOS Monterey - 10micron GM1000HPS - ZWO ASI Camera - Baader Steeldrive II