Why the main page commands are not clickable?
For some buttons to work in an application, certain conditions have to be met. For example, you will have to create a new file and define some parameters, then the buttons will become available. As I can see, this is a Bridge game which means you will have to follow some rules before you can play correctly.
Rules page: http://vincent.brevart.free.fr/english/_reg/card-games-rules.html