I recommend that you try using the "Select all" link and then try clicking the "download" button and see if this will successfully download the two games you are having problems with.
No games were selected for download

I have had the same issue. Its Just started doing that recently. You can still download from the Move tab in any particular game.
At my Home page, under Recent Games, when I select and try to download the first or second game, I get the "No games were selected for download" message. I don't get this message for the other games on the Recent Games list. I can download them with no problem. I'm using the latest Firefox browser.