Ward Skin

Hi,

I have seen a couple posts on this but they were made a while ago, but I want to get mine back. Back in mid 2015 I bought the Lunar Revel bundle which had Dragonblade Riven, Warring Kingdoms Tryndamere, Lunar Revel Diana and the Banner of the Horse ward skin (maybe another ward skin too I can't remember). Just recently I went to change my ward skin but I cannot see it in champion select and also in the shop.