What's on the screen when it fails to enter the game? That "Viewport target-densitydpi is not supported" warning is coming from Google Wallet, and shouldn't affect the game loading. I see that as well. There's probably some other issue that's causing you to not connect.
What web browser and version are you using? Are you able to load http://live-server.cardhunter.com:8080/check_maintenance.jsp if you go there directly? That's the same check the web code is using to verify the server is online before downloading the game.
"This XML file does not appear to have any style information associated with it. The document tree is shown below. <serverstatus> <active>1</active> </serverstatus>"
That all looks good, which means your browser *is* able to make that check. That at least tells me it's one of a few things: the HTML "onload" function isn't getting run, the browser is blocking the AJAX call (which seems unlikely since there was no error), or flash isn't loading correctly for you. Which web browser are you using? And which version of Flash Player do you have installed?
Are you running anything like FlashBlock, or do you have plugins or Javascript disabled in your browser?