Quote Originally Posted by TheCount View Post
It's EU players specifically that seem to be affected by this, so must be something they did that managed to bork it for specifically out side
People are saying it started after a big DDoS attack overnight/early morning and Square rushed out anti-DDoS countermeasures.

My bet is that they implemented overzealous countermeasures which is treating incoming connections from the EU players as potential attackers. If that is true, and they still haven't resolved it despite so many reports then it's a pretty poor display of network administration.