At first I thought they were asking about another game because they already have the avatar (and a 1400 high score), and another user was confused, too. But then they clarified:
How do you not realize you already have the avatar and are USING the avatar yet still trying for the score...
Either a troll, someone really forgetful or someone slightly idiotic has taken over the account and not actually realised (or checked if) they have the avatar.