UE5: Android build does not load Default Startup Map

Hi guys,
I want to setup my project for testing Android build, but it does not run as I would expect.
Instead of my Default Startup Map it loads this:

I get the same result on my android phone.

Error “Landscape Physical Material needs to be rebuilt (256 objects)” does not appear when I play desktop preview.
I do not use physical materials so far and even when I tried to create one and assign to landscape it changed nothing.

Please help cause I’m going mad.