Hello @augke ,
the answer here is very simple: These strings are untranslated to danish.
We use Transifex for translation and I just did a global search.
The links you provided are not the strings of the menu because they contain “odt”. There are strings at Transifex without the extension and they belong to the menu.
You can easily join us at Transifex and add the missing translations. Therefor please read Translation knowledge (valid for the entire Nextcloud project) - Wiki