This is 100% a SCAM. Do not send them any $ or Bitcoin, you will lose it!
I sent them $125 worth of Bitcoin. It was not added to my account. I then contacted there support and they claimed that they had not received the amount. I then sent them a copy of the Coinbase receipt and they then added $100 to my account as an "Admin bonus" (Not my $125) I contacted them to ask what it was for but got no reply, and they have not answered my emails since. That so-called admin bonus has just sat in my account and no earnings have been added. They are scammers. BE warned!