Adobe Aero reflective material

Hi all, 

Hoping to recieve some assistance!

I'm wanting to upload material to adobe aero that is shadeless and matte. I have tried optimising the material across the programs I am using (Nomad sculpt), and even tried uploading and downloading from Sketchfab, as it was something I heard solved the problem with PBR set to shadeless.

No matter what I do, it seems to always apply reflection. 



The white flash looks much worst in the app, and blanks out all the other objects as it spins. 

Apologies if this is a novice question, but any help would mean the world!