Hey Riot, after the Pool Party event, everyone who connected to league with facebook got a mystery skin and I thought I read that people who own all champ will recieve a mystery skin. It's been a week and I haven't got mine :(. I connected with facebook so I don't get why. Please help me 
Were you connected for all of June 28th, or have a restriction/ban?
Were you connected by the proper date for at least 24 hours?
"Make sure to connect from 11:59 PM PDT on 6/28 through 11:59 PM PDT on 6/29, otherwise you may not receive your Mystery Champion as expected."
If not, that could be the reason why you did not get one.
They're still being distributed last I heard.
If you want, you can submit a ticket to Riot Support regarding the issue. They would be able to help you a lot more than we can.
It appears that all gift have been distributed as of yesterday, July 7th.
If you didn't receive a gift, and you believe you should have, please feel free to submit a ticket to Player Support.
