Location within apps is incorrect
back story-
I just moved from Germany and had a German SIM card. I now have an American SIM card and I have changed my iPhone settings, iTunes settings, and even the apps settings themselves to all have the language and region: English (U.S.) and United States for the region.
my apps are still having ads and suggestion notifications in German.
how can I fix this to make sure my apps are all with the United States location?
iPhone 12 Pro