Not Getting Hextech Chests

Recently, I have been getting S ranks on all kinds of different champions. I had instant feedback punishment a few months ago, but the reform period is over because I am getting key fragments. Here is a screenshot of me having all my chests available: http://imgur.com/a/82FTD. I don't have screenshots of getting S ranks, but Rito staff are able to check that. I have S ranks on Hecarim, Veigar, and some others.