This is completely a scam. If you cannot withdraw your money without paying more money then it means your money is gone.
Stop getting fooled by these scammers. They will never give you profit.
I never try any such sites which seems to be shady or does not have any recognition and never heard of. One should be extra vigilant considering that their are lot of scam happening around crypto currency and people are trying to fool through different types and thus always research and then only register on any such sites.