After I deposited money with usdt, their customer service kept saying that they wanted me to deposit again because they didn't receive the money. I have checked that my usdt has been sent to their address. I just need to enter the wallet of their address . They said many reasons why I can't withdraw the money, and they asked me to deposit again. The blockchain is public. You only need to enter the address to view the wallet. I also checked that the usdt is in their wallet.