Yes it's happening to me and my mates in the USA too.""Tournament has finished" or "Host has left". Strange that,seeing as I am the host and I'm still here.
I play this game on a dedicated pc that runs the latest AMD 8 with quad core,16GB ram and a 2GB graphics card.I use the TOR browser to play.I do not use this pc for anything else at all and I still clean it up every day...............so why do I get problems? Because it's wgt's fault.Try upgrading your servers,or alternatively your techies.