Tiled galleries not working with Responsive

I cannot make the tiled galleris work with the Responsive theme. The pictures dont come out as thumbnails but like this

https://gittebjorn.dk/wp/responsiveslim/?page_id=13

I have activated galleries and carousel in the plugin.
I have an old responsive-theme site where it is working just fine. In the old version, there is a picture of a camera in the box that holds the gallery in the page, but in the new version there is kind of some blue squares – probably supposed to be the icon of a photo.

—greetings