PUN cross-platform issues

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Hello,

We are trying to develop cross-platforn VR/AR app using PUN. My teammate created app for VR Oculus Quest 2 - and he is building it for standard PC,MAC & Linux standalone app. I cloned whole app into my PC and tried to set it up according to Microsoft documentation for Hololens 2 device - I am building this application for Universal Windows Platform. When I launch the app in the Unity editor he is able to see me and interact with me, however when I build it and launch on my device - Hololens 2, I can't somehow connect to this application. We were also checking logs in Unity, and they don't even log that some user was connected. Do I need to do some additional setup to make this app cross-platform?

Thank you :)