I created an installer with german at the beginning. Later the installer became multilingual (added english), but now I somehow have the problem that all non-english region systems show german instead of english

How can I change this behaviour?
For non English region seatings your package shows in German because it's the default language of your package (you have created the project starting with this language).but now I somehow have the problem that all non-english region systems show german instead of english