Hello, recently there has been more issues with the game disconnecting once in a while, you are not the only one it happens to. Have you monitored your connection when your client is disconnecting? For me personally it has been happening about all few hours, for some friends more. It's been since a recent patch about ~2-3 weeks ago so it might fix itself. If it is caused by an unstable connection to the server you could try programs like pingzapper to go arround it, those programs are mostly free in trials for about 1-2 week and you can test well if there is a difference even if you are residing in the eu.