You may see this message when a currency is under maintenance. Please check the System Health page for more information. A brief explanation of what exactly is going on is presented in the right column.
"Offline" in the withdrawal column means that withdrawals are currently suspended - the reason may be stated in the last column, as you can see above.
Wallets are complicated software products delivered by the authors of each currency. We check the software regularly to maintain the highest security level. We are doing our best to implement the updates as soon as possible.
Check the System Health page regularly for updates. Once you see that the status has changed to green "Online", you are free to try to withdraw your funds once again.
If you have checked the status on System Health page and the status of withdrawals for your coin is "Online", but you still can't withdraw, please contact us by tapping the chat icon on the bottom right of the screen.