Free Unchained Allistar.

Hey! So this is moreso for a Rioter considering someone in the community probably can't fix the issue (unless its been resolved and I don't know) but theres a glitch with the unchainced Allistar.

When you follow the Facebook page and Twitter for LoL you get Riot Girl Tristana and Dreadknight Garen. BUT You're supposed to get unchained Allistar for subscribing to the YouTube channel. The link for some reason doesn't work though to get the skin, although the others do. I basically just want it so I don't have to buy the champion, but I also really really don't wanna get him as a mystery champion from the upcoming Pool Party and Team Up rewards, because getting a free champion from a mystery gift will make me cry.

So, has the link to get him been fixed? Or is there a different way to get him? Thanks :)