Hello,
I hope I found the right place for my question 
I’ve installed an external collabora server without docker (Tutorial Link).
If I choose english as a language in the Nextcloud usersettings the title of the menus are in english (File, Edit, View,…). If I coose german all titles are in german (Datei, Bearbeiten, Ansicht).
But the functions are always in english: today() instead of heute(). Or I can only add decimal numbers that are seperated with a point instead of a comma.
How can I change those things?
Thanks!
Leo