Thank you Mike for your recommendation.
Meanwhile I have solved the issue of not capturing sound.
My software does that, but not with my external audio interface as output.

I need to go via my onboard sound selected as output!
Now everything works fine


“Musicians”: UltraPak 2025
DAW: Studio One Pro +
"Instruments": VSTs and REs
Notation: Notion 6
Interface: NI Komplete Audio 6
Mic: RØDE NT1-A
Controller: Panorama P6/KAWAI VPC1/Atom
OS: Win 10 64 Pro