Komplete Kontrol A 25 / A 49 usually don't work?

J - Soundation

Good evening!
I'm new here and this is what it's all about:
I bought the A 25 and later the A 49.
I tried to switch them on and off with an active USB 3 HUB.
This caused the first confusion. At some point I realized that I had to make sure that both controllers were not running at the same time.
I mostly use Cakewalk / Bandlab, but there are also problems with others. Play, Record, Stop buttons don't work - just like all the buttons in that area. The same goes for the large rotary and push control on the far right.

I went through everything again on the PC today:
Everything is installed on Native Excess. The drivers as well. Under Programs I see the following: Bome Virtual MIDI 2.1.0.44 NI Komplete Kontrol NI Komplete Kontrol Driver NI Komplete Kontrol Mk2 Driver

Device Manager:
Audio, Video Game Controller: Bome MIDI Komplete Kontrol A DAW ( 1 ) Komplete Kontrol A 25 MIDI Software Devices: Komplete Kontrol A DAW Komplete Kontrol A DAW KOMPLETE CONTROL A 25 MIDI ( 0 ) KOMPLETE KONTROL A 25 MIDI ( 1 )System devices:
Bome Virtual MIDI EnumeratorUSB devices:
KOMPLETE CONTROL A 25 DFUWhile checking all these participants :) I noticed that something is wrong with the last one: Device not started ( nikkadfu ).
So, that's it from me. Would be nice if you could help me. I have tried several times elsewhere - without success. Recording.de didn't work either.
Have a nice evening