Earlier quoted context omitted.
I also have this problem with apps in my native language. I have my phone set to en,no because I prefer the English version over some bad auto-translated crap where some apps try to translate stuff. But then when I download a Norwegian app, then it prefers to use some badly maintained English translation instead, but here I would of course prefer the native version. Can't win.
And it would be _so, so, easy_. Make reasonable assumptions or provide good defaults. Make them overrideable. Make user settings stick. I have the same problem, by the way — my phone is in English, which means I get to enjoy Apples hilarious English pronunciation of German street names while navigating.
So for me having no,en (in the future where this works I would dare to have no first):
app is in english, has auto translated norwegian: choose english
app is in norwegian, has auto translated english: choose norwegian
app is in norwegian and english equally: choose norwegian
app is in french, has english translation: choose english