Can I have my Riot Girl Tristana

hEY there rito

I've been playing league for several years and in 2014 I liked your facebook page and tried to unlock Riot Girl Tristana. When I did idk what happened but it said that my code had already been used and it stinks because I want my pink haired Tristanaaaaaaa

HALP ME (i love you) -RawrImaDinoBro

Update: I clicked on the QR Code and when I did it had something pop up that said verify and I clicked it without reading (Nice Move) and now I can't even get to the page that has the code on it...