Yasuo just dissappeared. Gameplay

Hello. So today i wanted to play a game with my yasuo. I hadn't played him in about 3 weeks before then. I noticed that he wasn't in my champ select during a blind game. I was confused thought this was a minor bug. After the game i went into the shop and searched him up, and it said i ddint own him. I linked my match history showing almost 25 games with him not during free week. My friend gifted him to me about a month back. Am i missing something or this just a bug. If this is a bug please i want my yasuo back. Also there is no way that i could have accidentally refunded it i used all my refunds and besides i got no ip or rp back.

Sincerly, ARL Surge