solved it, something really stupid (usually is), the naming convention of the po and mo in the theme folder contained in the master language folder in wp-content was wrong. It said default instead of ‘theretailer-nl_NL’. Grrrrr 😉
Thnx for your help though!
Dragged it there, used that to create new files, still same. wordpress will not show the translated shop theme. All the other stuff is difficult for me. Not a developer (but learning this way might just be the case) 😉
how can i check myself it its valid?