I‘m not getting coliseum rewards?

So, just now I played the coliseum and obviously got a new Highscore ~ 95%. However it ended in a kind of stalemate so I forfeited resulting in my Highscore being saved, but I didn’t get any rewards and even when I went to replay (again ~95%)  and waited a decade for my characters to finally be defeated after half a decade of doing no damage I didn’t get the rewards either. So now I’m down a bunch of Era Material and don’t know what to do?