Years ago I developed a CRM app (so 90% composed of tableviewcontroller in static mode with textfields inside). The app is distributed via an enterprise channel and is not located on the store.
The app starts with a navigation controller and performs a series of pushes on many tableview controllers or view controllers. There are also various modals (full screen, pagesheet, formsheet).
The app is built through storyboards.
On the screen of the 11 "iPad PRO it is displayed with black frames around and with the proportions of the old screens, at the code level I have not managed anything with regards to the screen, everything is set as default.
How can I adapt it to the new iPad PRO screen and also maintain compatibility with older iPads? I can't find any parameter to change ...
Here the images of the basic configuration and the entry point in the storyboard
Have you set the constraints relative to safe area ? That is probably something you have to adapt if the app was developed some years ago.
Note: in your second screenshot, you show display on 9.7" iPad, not on 11".
Ensure you're building with the iOS 12.1 SDK included with Xcode 10.1 and that you are using a launch storyboard (not a launch image).