You didn't find it because there is no german help. You will have to post in english.
Es gibt keinen deutsch-sprachigen Support. Alle Beiträge müssen in Englisch sein.
I will not start this discussion over: although I am German, I will not provide german help, since this would double the time I have to spend with support (which is some hours each day already), since all questions would be asked twice: once on the english board, once on the german board. Would the fact that I speak Spanish and French as well mean I had to support those languages as well? Certainly not.
It may sound harsh, but you have to face it: if you do not speak english at all, and you desperately need german support, either ask a friend who can translate for you or chose another gallery software that comes with german support (try 4images).
GauGau