the plugin its not in german :(

Because it has no German translation it is stupid or did you actually wanted to profile your own shortcoming?

You (probably) mean that lack of knowledge(from your side) makes it too difficult for you to understand that you could translate it also yourself.

Just try it and hand the translation (the .po and .mo files) over to the developer. Then (maybe) other ppl which have the same lack of knowledge as you have, won’t post this kind of ridiculous ‘reviews’.