Avoid those scammers.. they shut down after they took all the money of their customers offering super high "re-invest" contracts for just a few weeks so you could never reach your ROI. Then they cleaned the withdrawal function, deleted their 4000+ Telegram group, their Facebook account and there is no way to contact them. They contact you to invest another 0.5 BTC to re-activate your account which is a scam too. All that scam with the poor excuse of "we have been hacked".