DOOCOIN - a crypto exchange - a fraud - based in Europe or maybe China.
What happened: given link to #DOOCOIN by a social media contact. Link loaded on iPhone without going thru apps store. Sent bitcoin. Made $ mining and options. Went to withdraw some money by wire. Waited 7 days ... no money. Contacted DOOCOIN help. They claimed my wire info was erroneous. It was correct! Froze my withdrawal privileges. Told me to send 600k to 'resolve' issue.
Lol, you should have known better mate, I come across this kind of sites almost everyday mostly from pretty girls private chatting me on telegram also know as Telescam, though I don't know how you came across this site but if it was some one you don't know that introduced it to you, then you should have know better like I said earlier.
Even this days, it is no longer safe to click on random links sent to you by anyone mostly on social media, even if you know the person sending the link or trying to introduce you to an unknown platform, be very careful because it is possible that that persons account has been hacked , and the hacker is randomly chatting the friends of that user whos account they've hacked, it was through this strategy that a friend of mine lost about $320 to scammers .
sorry for your loss by the way, I really hope it wasn't a lot of money, and thanks for sharing here so others can learn.