Grades in Branching scenario not working

Hello folks,

I'm trying to get right the grades in a Branching scenario activity (Moodle 3.11). It's just a very simple scenario and the grades show allways wrong. Any idea what i'm doing wrong?  The points on my Gradebook are 4, and the activity consist of 2 slides eacht with one question.

Look at this:

Thanks in advance!