I came across another post reporting the same problem.
viewtopic.php?f=29&t=4610#p29328Here is the quoted text
domenico a écrit:i visit the online catalog using my unique key string and when i click on a link to download the app, nothing happens.
i have enabled the file association and i just don't get it why it is doing that, but i am able to use any app from the liberkey.
The problem is not with Liberkey servers. I just sucessfully installed SimpleSudoku. The game is awesome by the way
I request you to do the same thing that I said to the other poster
terminator1234 a écrit:It might be your firewall that is blocking the downloads. Try disabling Windows firewall or any other firewalls and see if the downloads are working.If it still doen't work, the problem might be with your Liberkey configuration. Re-install Liberkey from scratch.
And keep us posted too Giorgio G