Hextech chest not dropping after i get S/S+ and have chests available

Title says it all. Had back to back Garen games and went S/S+ and never get chest for either one. I have 4 chests available. If anyone else having this problem just say here. And if there is any solution please help. Also the load up screen after a game has finished takes long to load after the update. Whats up with that?
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