On 2021-11-17，I deposited usdt from okex to gate.io. At that time, I didn’t see much and chose the OEC chain, because if the deposit chain selection was incorrect, it couldn’t be deposited before. I waited for a long time and didn’t arrive the account. I contacted gate.io. At first, the customer service said that it can be resolved in about a week and I already waited for over one month now. I will be replied that we are following progress and please wait patiently. We will reply if there is an update." I have had the experience of filling the wrong chain before. It can be solved by exporting the private key from my wallet. The whole process is completed in a few minutes. I don’t know what it means that gate.io keeps delaying it.