Recently we are experiencing huge growth of traffic and user registrations, our servers are under heavy load and there are huge pressure on Ethereum wallet servers. And the congestion of Ethereum network makes it even worse, thus the withdrawals of Ethereum and ERC20 tokens might be delayed for hours. We are truly sorry about this and we will do our best to improve the performance and speed, KuCoin users used to withdraw their assets instantly, and we promise that we will do whatever we can to recover the withdraw efficiency. Thanks for your support and patience!