After match ranks
Network Operations – 4:07 PM We are aware of issues with post-match grades and are investigating. Loot is functioning as expected. 4:07 PM Network Operations — Post-match grades (S-, S, S+) are not displaying properly, but associated Hextech rewards are being processed and delivered as intended (possibly with a slight delay).
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This makes it look like only the S rankes are bugged, in that case u ow me 2 hextech chests Rito, but i think maybe i didnt get S but A+ and your info is not clear, or wrong