Seems like i have fallen for it also. i was reading bitcoin fog was trusted.
I have used this website - http://foggedd3mc4dr2o2.onion/
it is also advertised on hidden wiki and etc.

Deposited almost 2 btc, i see them in balance but when i try to withdraw to any wallet address, i get error "invalid btc address"
Be safe friends. please help to remove the advertisements and to paint this service already black and not even give it publicity in anyway or a place to doubt.
it steals people money period.