Can't connect to server

I have installed ka-lite on a raspberry pi and am trying to register the device in order to download videos. I am using the One-click option, which says “Connecting to server. Please wait” but never actually connects. I left it running all night, and it seems it times out or something. I have internet access because I used it to update the OS and to download/install ka-lite. Any ideas for how to fix? Is there another way to download all of the videos?