Broken Images when distributing apps through TestFlight

When testing my game on Xcode and building to an iOS or iPad device all images in the game show.

Yet when I submit the app to TestFlight, some devices are not showing all of the assets, replacing the missing images with a red x in a white box. It seems to be tied to certain atlas maps.

For example both player 1 and player 2 have their own separate atlas maps. On an iPhone XR both player 1 and 2 are missing showing the red x box. Yet on another device such as an iPad mini for example only player 2 assets are missing.

It seems strange that Xcode would be distributing some assets to one device and none to others. What would cause this strange behavior and how to fix it? Thanks in advance.
Seems like this was a twofold issue.. Unfortunately I didn't have time to break the two pieces up to see what caused the second issue. But I rebuilt with the latest version of xcode and turned off two settings which had not caused an issue but it worked so i'll leave it alone.

Did you later figure out a solution to this issue and what was it?

Broken Images when distributing apps through TestFlight
 
 
Q