If you haven't changed anything, then it's most likely a problem with the website/company itself. Since it's an online game, if there's a problem on the company's end, you will feel it too on your client. Additionally, we're talking about a gambling website and these usually get in trouble with local authorities for not paying their taxes and similar issues. All you can do is to uninstall and reinstall the application, but it probably won't help you that much. Additionally, make sure that your Internet connection is functioning properly and that you're not blocking the game with your firewall.