Hextech Crafting

Hmm I think i might be having a problem with my hextech crafting since now that I have made 3 players mastery 6 I no longer receive hextech boxes even if I get S or -s or +s. Also this happens when i play with my mastery 5 champions so I hope I am not the only one experiencing this, or else it's maybe normal and I am missing something. Yes so I also don't get the keys either ... and I have loads of essense to use :(