Some months ago Google announced that the Google Code service will be shutting down and after August 2015 all projects will be read-only.
Version 1.0 of Easy!Appointments provide links (in the settings page) that point to the Google Code project which was used as a project management platform. The project has been already moved to GitHub and you can track the development progress from the following URL.
https://github.com/alextselegidis/easyappointments
The upcoming version will feature fresh links that will point to the correct resources.
GoogleGoogle CodeGoogle Code projectproject management platform