Hi Gs,
In the picture u can see my Shop appearing on Google but the Description below the name is not right.
Where can I change this ?
Hey @Henri13
Thanks for your questions and see my video on that here to hopefully help you achieve a great representation on Google search results.
To fix the issue on Google please go through our help docs below that explain what steps to take:
Hope that helps! 
Das ist die Metadescription der Seite, solltest du dort direkt ändern können. Aber Google kann trotzdem eine eigene genieren.