[Client] - Missing Skin

So one day, me and my friend was playing lol. we gifted each other skins. I got Warring Kingdoms Tryndamere, and my friend got royal shaco. It was a long time ago, and i did play with the skin a lot. But today the skin was gone, and i did not own it. So i think there might be a problem with the servers, or my account, or something with the new warring kingdom theme. I USED to have 3 trynd skins: King, Sultan, Warring Kingdoms PS: This is not fake.