Please make the placement test work and take back the test out funktion.
The test out is still there, if you open the skill directly.
I have used it myself last Sunday when I completed my DE-EN tree and untouched (grey/coloured) skills.
However, it only brings your unfinished skill from crown L0 to L1.
You can not test out from crowns L1 to L5 right now.
You can access the skill list here www.duolingo.eu/zzzcadiz/progress
Or use the whitelist workaround to show the old "Home" 5-bar strength skill design, which also allows you to directly open skills: https://www.duolingo.com/comment/26850594