[Client] i didnt get lvl 6 token on Ekko

I hit lvl 5 and got a lvl 6 token on the same game, league also told me I got the token but When I checked later (a week later or so) I didn't see it. I don't know if its a bug or not, my friend said it wasn't but I'm not sure.

1. Hit lvl 5 and get an S in the same game
2. check loot