How to get pawn to move through the air when following the player?

So i’m creating a simple FPS for one of my first major projects, and wanted to make a pickup that follows you around, rather than one that sits in the level, waiting to be collected. so i made a pawn with a player controller, added a track player function and a nav mesh, etc.

my problem is that, despite making the nav mesh cover the entire level, the pickup won’t float up or down, and wont even track the player if spawned to high above the green patch in the nav mesh.

Is there something i could do? is there perhaps a different type of volume for handling upward movement? do i need to do something to the pawn? help is appriciated.

some pictures, for reference:

I currently have the exact same problem. Did you ever figure it out?