Hi!
Thank you very much, it works now.
I was able to find the issue(s). The first one was, that there was an exclusion set for all the user posts, so none of the post type results were actually showing up, I have cleared that here. The results displaying were only the post tag and taxonomy archives, which I guess you don’t need, so I have corrected that as well here.
Now you should be seeing the correct results, with the images, where available.