Placement test failed twice
The placement test failed twice after 2/3 of the test with the warning that there is something wrong.
I tried the placement test at least 10 times now, and every time at indeed around 2/3 I get the message: "We're sorry, Duolingo is experiencing problems now. Please try this test again later". On the go I reported quite a lot of alternative correct solutions though (I'm a native Dutch speaker).