TestFlight release has issues on my phone but no one else in my developer group

When running my project using the Xcode simulator it looks the way it should (the first image attached).

When I release to TestFlight weird grey boxes over the buttons (the second image attached). The grey buttons appear to be the functional areas of the buttons. Other parts of the app are out of place as well.

Any idea on what is going on here? Other developers have tested this same release but do not have the same issue. What can I do?

TestFlight release has issues on my phone but no one else in my developer group
 
 
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