I checked for capital letters, in stock and the sync. The product is published and from included in the catalogue.
I copied the pruduct “Muli Muskel” and it didn’t work as well. I copied a different product and renamed it to “Muli Muskel Test” which worked. Afterwards I changed the Name to “Muli Muskel” and it didn’t work again.
Is it possible that the name is the problem?