I've been getitng S ranks at the end of games but still no chests are awarded to me. It shows that I have 4 open slots for one (not timed out) but i'm never receiving them. I have all these keys but no chests to spend them on. Can we fix this bug so I can use the loot system as it's suppose to be used? Please and thank you!
It depends on the champ, if you've gotten S with 
for example and have gotten a chest for it once this season already, it has to be with another that you have NOT gotten S with this season.
Did you already get a chest on the champion that you are getting S's on already?
If yes, then the reason why is because it's one chest per champion per season.
Don't forget if you que up with someone and they get a chest that it counts for that champion earning, even if you didn't get an S. Check your champion list and look to see if you have a little gold border around the champion (not mastery)
