@DevilRev
Well I “fixed” it by making the microphone (which is USB) devine nr 0 instead of 1 in ALSA, now the hotword detection works flawless BUT my speaker connected to the normal 3.5mm jack does not work anymore.
Pygame which I am using for audio output at another location of my Magic Mirror says there are no audio devices.
Is it possible for someone to make the audio used for the microphone with this module selectable? I really need that and can’t work around it.