UE5.3 & Android VR Nightmare

I am now at the point of trying to use UE5.3 on Meta Quest Pro.

NOT EVEN the demo projects for collaborative viewer (Architecture), which compiles and runs for win PC will start on Pro. (I managed to compile it and deploy after a marathon tool zig zag, last of the steps was that it said Visual studio 2022 17.3 cannot do it, bu ti need 17.4 of the same… )

BUT THE .APK opens up black on black and nothing shows in the Meta Pro at all???

Not sure how or why do ppl at UE deploy DEMO examples that do not work, I spent my dev career in Germany, so this is strange to me…