[mcl22]

I too believe that the problem is what you explained (and what we already talked about) in point 4. But I also see a problem in point 1. Let me go through them one by one:

1) The history tells me the same what it is written on the cards (is that right?). So it doesn't get me any further because it just states what Alexa did not what she heard (in my opinion). I'm gonna explain it better in point 4.

2) When saying "Alexa, öffne kodi und ..." she opens up the right skill. That works.

3) During all my tests I used the exact utterance to make her do something. The only word I added was "und" which means "and" (open kodi and do something). Also this seems to work as intended.

4) Here we go now. The slot obviously seems to not be generic. But when I tested it with artists I had 300 samples in it. And this is also true for albums, songs and movies. So if the requirement for a slot to be generic is to have around 200 - 300 samples, it doesn't work for me.
As said before the app history doesn't help me either because to me it seems that it doesn't tell me what I really said / Alexa really heard because if eg Boney M. is part of my samples for MUSICARTISTS she performs right. She plays Boney M. and also logs that in the history.
But if I delete Boney M. she plays Bonnie Tyler and also logs that. Just as if I would have said Bonnie Tyler instead of Boney M.. And this is absoloutly reproducible for me. So I don't think it's about my pronounciation or me not speaking clearly enough

5) The skill (code) performs just as it should. I see it in the logs. Whatever it is given it does the right thing (simple match / fuzzy match).

I begin to think that it have something to do with me using the skill in german. I don't know but having those problems with the utterances at first and now with the slots not being generic although they do have enough entries ... I don't know