I only see moisture at the bottom end of the wall in the penultimate and last pictures (and only at the edge); in the light gray pictures, mobile phone flash artifacts seem to dominate; the brown looks to me like wallpaper remnants soaked enough to be torn off, and otherwise I see drying cracks in the screed around the pipe penetrations. It should be clear that air gaps between screed and wall are not to be sealed - otherwise, the screed would not be floating but a sound bridge. My interpretation of the pictures contains no drama at all (I am looking at the enlarged images on the desktop).