Buster Medals not dropping

Done Free and Main matches, twice on each and no buster medals?

Is there a level req? I'm 70.

Buster Medals don't "Drop" for me either, but they seem to immediately get collected by some means.

It only shows my group members collecting them. I collected random junk and discs.

Buster Medals are Material items, so if you have auto-pick up set they are sent to your Inventory or Material Storage without showing up on the ground.

for me, they automatically go into the material storage I get them and wired named crystals no idea what they do