Problems with importing blender object

200298-photo-2022-10-01-07-06-05.jpg

As you can see, the top of the building is broken, it has to be round and symetric, and we should see the other side of thoose “walls”. I have already try to flip verts in blender( with shift + n ), but it did not help :frowning:

In the material settings for this object, have you tried changing Render Face from “Front” to “Both”?