Hello, i'm actually the guy who won. Im having trouble withdrawing, says I should contact support but I dont see any function to do that, and the chat is dead.
@sawdice: how do i proceed?
lol proof?
What proof? Here is my account, i dont know how i could otherwise prove anything..

Wow, I cant believe it..the second big winning in a new dice site . First was 11.x btc and now 9.x btc..the house should be in negative right now

Actually there is a function to contact them in the left bottom of the page, it will direct you to outlook email service. And their contact support email is
support@sawdice.com Hope this help you, and congrats on your winning.