Second user can not log in to mycloud drive dashboard

 I am aware that the web interface is being upgraded

The WD2go web interface in no longer available:

http://community.wd.com/t5/My-Cloud/New-users-cannot-connect-remotely-to-WD2go/td-p/899004

"On August 27, 2015, WD will be upgrading and replacing WD2go.com with a different Web-based access system. We expect that this upgrade period will last several weeks. We will provide further updates on the availability of the new Web-based access system periodically during this time on this page.

" You will not be able to use WD2go.com during this time. WD2go.com itself will no longer be available after this perod."