iOS TestFlight Problem

After working through a few problems, I have successfully built my app for iOS and have uploaded to App Store Connect. I am trying to use TestFlight to test on device. My app will open and show the default AppGyver splash screen, then the screen turns white and nothing else happens. My first page is a firebase authentication page, it does not seem to be loading.
Everything works fine in web deployment as well as AppGyver Preview, just will not work on my device via TestFlight. Any ideas?