I'm pretty sorry for the lack of information, and I'm sure this is something I'm doing wrong, but I don't know where else I can ask. I have a pretty small application that shows a list of values from a static file. I uploaded it to iTunes Connect and downloaded it using TestFlight. Everything works just fine in my iPhone X.

I have modified the application to add a Firebase connection with a Firestore DDBB. If I run the application from Android Studio directly in my phone, it works, and it shows the data from the database. If I archive the app and upload it to iTunes Connect, and install it through TestFlight, when opening the application, it just appears as a white screen. The application works but shows nothing, but an empty white screen.

Do you know what is happening or how I can get information that can help to solve my problem?

Regards