I launched an app a couple of years ago.
The app re-branded. Owned by the same company. We renamed the app in the App Store. Logo updated.
In App Store Connect, iTunes, etc. I see the new app name. In Test Flight, the new name is shown.
Additionally, the various spots within the app (like the Display Name) and other internal areas where the name were used were all updated.
However, in my Settings app, and on my device where the icon and app name are, the old name is still shown.
Why is this? Is there a way to change this?