I don't see what skin I got from the mystery skin

Don't even know why Riot would send a gift for me but anyway I saw the popup that said something like "gift from riot, Mystery Gift" and then I right away clicked Awesome! button below. But nothing happened after. i was like why the f am i getting nothing and checked both Purchase/ Gifting history but nothing new was in there (last purchase 11/20) anyone got solves?