User blog comment:XAero/"The Connection to sever has ended"/@comment-99.235.217.97-20151225034157/@comment-7395018-20151225040828

I edited your comment as swearing is discouraged on Wikias.

However, if you have these problems, try a clean install of the game. It may change some settings. If that doesn't work, try checking your firewall and make sure it's not blocking the game. If even that doesn't work, check your router and/or your connection to your network. Past that, you might have to contact your Internet Service Provider and ask about possible problems with the network.

Another method you could pursue is the one of sending a ticket to Nexon to ask for advice or checking on the forums to see if your problem has a solution there.

Good luck! :)