Also, I’ve just noticed you’re using Unreal 5.3?
I believe that might be your main issue!
To successfuly and properly build for quest, the MetaXRplugin is a must-have.
And currently they are at 56.0 version, and It is only compatible with the latest 5.2.1 Unreal Engine version…
For a Unreal Engine 5.3 version, it might be worth checking out the github for the MetaXRplugin and check out the most recent available build, it probably runs in 5.3… but could bring some issues, since it’s still being developed and could also be a bit more difficult to implement.
Hope this also helps!