Forum:Trying to get Zephu but Redemption Code isn't working

Hi, I'm Fenrir ID:90534232,

I'm trying to get the Hero Zephu, but whenever I enter a redemption code, a box appears that says, " You cannot participare in this campaign anymore today". What does that mean? If i wait a day and try again will the same redemption code work? Please help me! this event end 2/2!