do not show its installed

when i click install it doesnt show it has been installed, it only show installlink again. And sometimes it also install dublicates and i cant uninstall it since it only showinstall link

[Digital Jedi]

And what are we talking about here?

[maidos]

im saying that even if i clicked the install link it still doesnt show that it has been installed. Normally after you hit the install link the page refresh and you will later see Uninstall link instead right?
But my case it doesnt. It still show install link and it manage to display 2 dublicate games aand no way to get rid of it