You are free to monitor status of all currencies performance on System Health page. It was developed in order that all our operations would be transparent and monitorable. Average time of deposits and withdrawals processing can also be found there.
In case you see that withdrawals of some currency are offline in most cases it means that the wallet is being updated.
Wallet is a complicated software product delivered by the authors of each currency. We check the software regularly so that to maintain the highest security level. We are trying our best to implement the updates the soonest possible, so please allow some time for us to finish the job. Once you see that the status in System Health changed to green, you are free to try to withdraw your funds once again.
Another reason why the withdrawals of certain currency may be unavailable is that this currency has ICO status. For more details on what ICO is, please follow the link: ICO coins.
Withdrawals from HitBTC account to another HitBTC account
It is impossible to withdraw Ethereum tokens to a HitBTC address from your account. If you try to do so, you will see "Currency operations not available" error. It does not mean that withdrawals of this token are suspended. Please try once again but input an external wallet address for your transaction.