Skins gone missing

After this Ryze update, Riot Games has changed the art of the different champion skins of Ryze the champion. I guess along the way they felt like taking my zombie Ryze skin away as well. Yesterday before the update, I had the skin, but now I do not have it. I don't know if this is a bug going through the league community, or Riot Games are true thieves of my wallet. Please help me solve this mystery or get me in contact with Riot Games to get my Halloween legacy skin back. Thank You