Not Able to Select Static Meshes with Rift

I apologize if this is a dumb question, I’m very new to this program…

So I imported some assets from the Unreal Marketplace and set up a scene but when I try to select the objects and move them in ‘VR mode’, the selector just passes through and doesn’t recognize anything. It will however select other certain objects so I’m not quite sure what is going on. Thoughts?

Images attached. Thanks.

Nothing I can tell in wireframe mode, image below. Though it is always the same meshes, so the arches, the stairs and the walls I know cannot be selected, but the wooden platform, the floor, and the cobbled floor can be. So in the image, the objects on the upper right cannot be, but the objects on the bottom and left can.