Ethereum Constantinople Upgrade
Scheduled Maintenance Report for
The scheduled maintenance has been completed.
Posted Mar 01, 2019 - 07:00 GMT+08:00
In progress
Scheduled maintenance is currently in progress. We will provide updates as necessary.
Posted Mar 01, 2019 - 02:00 GMT+08:00
We will be undergoing scheduled maintenance at this time to support the Constantinople protocol upgrade. During this time, we will be halting ETH wallet activity -- including sending, receiving, and converting ETH on, as well as ETH transfers between and Coins Pro.

You can read the following FAQ for more information:
Posted Feb 28, 2019 - 14:41 GMT+08:00
This scheduled maintenance affected: External Ethereum Transfers (Incoming from External Wallets, Outgoing to External Wallets).