The service has been discontinued

We are sorry to notify you that we will be shutting down the Ubuntu One file services, effective 1 June 2014.

It is no longer possible to purchase storage or music from the Ubuntu One store. The Ubuntu One file services apps in the Ubuntu, Google, and Apple stores have been removed.

As always, your content belongs to you. If you have already uploaded any content you can simply download your files onto your PC or an external hard drive. While the service will stop as of 1 June, you will have an additional two months (until 31 July 2014) to collect all of your content. After that date, all remaining content will be deleted.

We've always been inspired by the support, feedback and enthusiasm of our users and want to thank you for the support you've shown for Ubuntu One. We hope that you'll continue to support us as together we bring a revolutionary experience to new devices.

See this post for more details.

The Ubuntu One team