Need some straight answers. Hextech system

I'm failing to find any real concrete answer on how the hextech system is reprimanding "toxic" players. I'm also wanting to know if anyone else is having any issues with the drop system after games.

I've played 3 games with a premade of 3 ppl. Each game one of the three of us has gotten an S rank. All three of the games they received shards and chest drops. I received nothing from each game. Each game was a win and 2 of them I had an S rank. Riot has stated that toxic players will be locked out of the hextech system. Other statements have said that they won't be able to obtain loot. I was able to craft a ward skin and disenchant a skin I didn't want. So I can USE the hextech system, but I am not getting drops from winning games with premades and with S ranks.

If I'm restricted, is it temporary? Why am I restricted? I had one chat restriction back in January, that's it.