I can understand your frustration, I used Ascom and when I first started with Indi & KStars I struggled, especially with the Linux side of things getting all the USB ports set so they didn’t fight over their port numbers at every startup, but I like the all in one place set up so I stuck with it. Now my Pi4 mounts on the scope outside and I sit in the warm house and monitor the progress over VNC.

Stick with it it does work.

I’m sure that Stellarmate will do it’s thing when you get it sorted, this forum & Google will get it working that’s how I achieved it.