HW Chadward

and I KNOW my tf2 inventory has 4 ref in it

i need help pls this is my first time w/scrap.tf

Im so confused everytime I try to trade ANYTHING strange for 2 ref or 3 ref (ive looked at at least 20 diff. items) it says: Trade Error Trade was empty. This likely means you offered items that were overstocked, or that you can't afford what you attempted to purchase.