The process of their work is clear, they put the prices of tokens higher than other exchanges and make a big turnover on them. Thus people put tokens in the hope to sell their more expensive and to withdraw money in BTC or ETH. But the withdrawal account is blocked and then require to confirm the source of funds and documents for the passage of KYC. In General scammers!!! Don't get fooled by this trick. SCAM SCAM SCAM