To support Bitcoin Cash (BCH) mainnet upgrade, UKEX will suspend Bitcoin Cash (BCH) deposit, withdrawal from 1:00 PM on 15 May, 2019, London time (8:00 PM on 15 may, 2019, Beijing time). You can deposit your BCH to UKEX before the upgrade if you are unsure about how to deal with the technical issues during this upgrade, UKEX will take care of it for you and ensure all your assets are transferred safely.
The resumption time of BCH deposit and withdrawal will be announced in a further notice after the upgrade is complete.
For more details, please refer to:https://github.com/bitcoincashorg/bitcoincash.org/blob/master/spec/2019-05-15-upgrade.md
Thank you for your understanding and support as always.