First check to see whether your phone browser cookies is setting accept. There do have problem if you turn off your phone browser cookie.
Sorry we did not make it clear in our site for "Free Join". We are working a totally new site which will be clear for everything.
Currently you can use www.cubedrive.com web and touch version FREE up to 1G space. Private Cloud | CubeDrive includes online office, online event, social network and sharing. You can create Spreadsheet, Document, Presentation, Project Mgr online file, and share them with your friends, groups and organization.
We also provides an enterprise version which can be installed in organization server.