hello friend,
first i tried v2.1.0 and it doesn't work here, stuk on "preparing" as i showed in the attached printscreen.
secondly i tried the v2.0.1 and pressing "new" it redirect to the 'Config' page. and i get the domain error message.
v2.0.1 is working, input the key, the key in the file folder, and it will work, read the official site tutorials.