Please note there is an issue with cPanels latest update. This is what cPanel has to say;
We are currently aware of an issue with conflicting A records for proxy subdomains occurring during an update from cPanel/WHM v68 to v70.
As such, we are temporarily blocking updates to v70 until CPANEL-20319 has been resolved.
More details regarding this can be found here: https://go.cpanel.net/CPANEL20319
Thank you for your patience and understanding!
We will update you with news as we find out our selves. https://forums.reptiliahostingclient.co.uk/viewtopic.php?f=4&t=105&sid=9702ee997b488c7ff8c0aa0f8f01e805
Update 19/05/2018 9:34PM GMT: This has now been fixed.