Riot please fix this...

Okay, today I wanna talk with you about something... You know, usually I am a good and calm little foxy. But today, Riot even managed to get ME angry...
What happened?
Well, I was logging into a game and felt like playing one of my favorite Ahri Skins, Prestige KDA Ahri, which i had missed to buy when it first came out. Maybe you remember, prestige KDA Ahri had this really awkward forehead and i decided not to buy it, but they fixed it, I mean they fixed me, I mean the skin ..ugh... you know what I mean, they fixed the skin and I couldnt buy it anymore. So i just bought it recently, for a lot of money. I bought like hundreds of these masterwork chests to be able to get the gems to finally buy my prestige KDA Ahri skin.
So some months ago, I became the proud owner of that beautiful skin. So today, when I locked in Ahri and wanted to choose the skin, it was suddenly unavailable?! My heart and soul left my body for a minute. This happened even after the restart of the game...
The good thing is that the skin still appears in my collection, but until today, I cannot select it in Champion select - and this makes me really sad. Riot, please fix this ...