Walletbi.cc is a complete scam site designed to lure people to invest their hard earned moneyThey are working on the greed of human nature by allowing you to withdraw your first withdrawal after then, they will block your account from withdrawal once you deposit higher amountsThey will request you to deposit more usdt/coins promising to unblock your account but at the end, they will do nothingThink well and run away from itThe guy advertising it on Facebook may be the one behind the siteRun away please