if its the same like ZCP, you can change the language based on the installed/supported language of the system (i have CentOS 7 so if you have a Redhat Based system this will help a bit)
will give you all installed languages. - Then go to
and change the default=“C” to “de_DE.utf8”. All newly installed stores will have german names.
For changing the existing english Stores, there was a script, but i dont thinks its compatible with kopano.
What should work (if possible) is to unhook the store, and let kopano create a new one.
Basicly just for stores that got nothing loaded.
I think further information will follow.