The choice between slow and normal speed have gone
When the German man is speaking, he is rather distinct and now the option for a slow sentence has gone.
The keyboard shortcut listed, for me at least, does not work. (It's ctrl + shift + spacebar). You can find a list of shortcuts by hovering over your profile picture and name [located on the blue bar at the top right section of the screen] and then clicking keyboard shortcuts.
Yes, it's not just German but I'm finding it in Spanish too. The digital pronunciations in Duolingo, unfortunately, are not that helpful, especially compared to other language sites. The digital readers at Memrise for example are not only clear and personable, they provide what a learner needs, a voice in your head when you're trying to remember a word or phrase or grammatical structure.