[CLIENT] Got an S rank on Lee Sin, after the game didn't receive level 7 Mastery Token

So I won a ranked solo on EUW 6.12.17 after 7.24 had already gone live and I got an S rank on , but didn't receive my last token that i need for the level 7 mastery, unfortunately don't have a screenshot of the S, but there is the scoreboard.

This is the first time such a thing occurred and it's a tad bit frustrating that i didn't get my token. Also have no idea why this happened.