Build works in AppLab only when packing everything in one apk (no obb)

Hello,

I am using Unreal 5.2.1 with MetaXR 56.0

I managed to make a shipping build and upload it to AppLab with the Meta XR Platform Window (in Unreal editor), but when I launch it in my Quest 2 it just shows the 3 loading dots.

The build runs correctly if I install it from my pc using the Install_*.bat in the package folder.

If I make the shipping package activating "Package game data inside apk" activated and upload it to AppLab, then it works. However this is not a solution because the apk must be less than 1 GB, and my final app will be more.

I also tried uploading from command line, with:

ovr-platform-util.exe upload-quest-build --app-id **** --app-secret **** --apk .\MyApp-Android-Shipping-arm64.apk --channel ALPHA --obb .\main.2.com.mycompany.myapp.obb

Upload and validation are ok, but when launching the app I still see just the 3 dots.

I suspect that the obb file is not correctly managed, because while downloading in the Quest I see that the app size is just the size of the apk (~40 MB), while when downloading the app all packaged in the single apk it was much larger (~400 MB).

Thanks for any help!