Build behaving differently in testflight compared to simulator

Hi all I have an app I’m pretty much done with, and on the Xcode simulator it works perfectly and the IAP shows us when the purchase buttons are clicked but for some reason when it goes to testflight none of the buttons respond, is there any reason that would cause it to behave differently in testflight when its coded correctly and works in the simulator.

thanks

Build behaving differently in testflight compared to simulator
 
 
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