Language settings don't work as expected

Hi all,

I just changed from owncloud to nextcloud and therefore am very new in this forum.
If I set the default and force languge in config.php to ā€˜de’ I get a strange mixture of English and German. In the documents tab the left column is given in German but the items in the list show English text (ā€œ5 minutes agoā€ instead of ā€œvor 5 Minutenā€). After activating calendar and contact apps contacts are shown with English labels (ā€œAddressā€ instead ā€œAdresseā€, ā€œPostal codeā€ instead of ā€œPLZā€ and so on). The calendar app has English weekday names and shows event time as ā€œ7:00pmā€ instead of ā€œ19:00ā€. Seems not to be very applicable …
Any hints?

[SOLVED] Removed ā€˜force_language’ => ā€˜de’ from config.php. Then changed language in my private profile to ā€œdeā€.