I was able to get the touptek main cam (and telescope simulator) and connected INDI as you described:
The cam is recognized
But here is the next Problem: Offset can't be adjusted, it is just greyed out:
Months ago some people had that effect.
Seems, that there are still problems with the new INDI version combined with the new Touptek driver.
And I think, that isn't directly related to AstroArch at all.
Even if there is a problem with Toupcams at this point (think no problem with other cams) it will develop to a stable system, that hopefully will be bundled with more additional software as AstroDMx.
Many thanks to Mattia for his initiative to make AstroArch. And many thanks to Jasem and all of the specialists, that make fantastic KStars/EKOS/INDI possible.
I have a separate ssd with AstroArch and will make all updates and give feedback.
For now I can use KStars 3.6.0 (last Astroberry version), when I have a clear night.
Regards
Stefan