SharePoint is the new Endevio online cloud fileserver
Go to: https://endevio.sharepoint.com/sites/endevio
If asked, login with your O365 credentials
Click on 'Libraries' which is in the upper left menu for a better view
All the Sites that you have access to will be displayed there
Just click on the desired site to open
There is also a site called 'Personal' which will be visible only to the specific user to be used as a temporary space for files that usually are kept on the desktop