First, it is important to note that you need to have been a part of a reservation and that reservation will have needed to become live to have virtual machines to access. If the previous is true, then within the Webportal ( under the Player tab there is a page called Workspaces. Within this page, on the left side tab, it will show if you have any Workspaces. If you do then there will be blue boxes on the left side tab with information about them. Select this box and you will be shown an interface to deploy a challenge. Only once a challenge is deployed will you have access to the virtual machines.