Apk runs on consumer quest 2 but not business

Hi all, I am developing a multiplayer application with Unity 2020 using Photon. In the app it is also possible to record your own voice and store the file on the headset. 

The app runs without any problem on the consumer headset (version 38), but crashes immediately on the business headset (version 29), even before the Unity splash screen shows up. 

Does anyone know if this might be due to the older version of the business headset? Or do I have to handle permissions for e.g. audio recording differently? How can I get error logs from the business headset? 

Any help is greatly appreciated!