Hey guys, I've been away for a while! Took a break from Minecraft, but now I'm back and full of sadness... I am trying to sign in to the Official Server and Legends of Middle earth and yet... it doesn't let me?

(and I'm not sure if that picture above is going to show or not) But ANYWAYS, it says "Failed to verify Username!" And I have been playing as PapucheIsland for a while... I don't know why it doesn't work!? Somebody please help! :(