Yes the registration form is only in German, but you can change the forum language to English when your are registered and logged in.
I have now added screenshots with English translations and step by step instructions:
(Or use a translation program)
We could use your version when you are done with it before.
Send me a PM in case you need some testing.
Edited by Stefan Roess, Jan 13 2018 - 05:59 PM.