From your extremely short description i can only assume that it may be some of the following:
-You may need to download and install the PC game again, i'm not sure but i think it may have been updated.
http://www.flyord
ie.com/pub/new/3DBilliardsinstall.exe
-Your computer may not think it's safe for you to enter FlyOrDie games for a reason or other. But, i assure you the game is perfectly safe. You may need to temporarily disable your firewall on your antiviral software to see if that is your problem. This isn't a safe method so be very weary of the consequence of doing so. If your antiviral software is causing you the problem, remove it and i would suggest that you download McAfee antiviral software or Nortan antivirus, I have used them both in the past and they both worked well for me.
-If you have recently downloaded anything off the Internet and in some cases this can be the cause of this pacific problem i would suggest that you try and remove the software or un-install temporarily to see if you are able to connect to FlyOrDie games.
-Delete temporary Internet files and cookies.
I’ve taken a few wilds guesses on this issue, they may or may not help and I hope that your problem is sorted soon.