No one has given you a solution because few if any people have experienced this problem.. I just logged in dude .. Check your Av, and firewall settings.. if extreme measures are necessary just reinstall :O... Because I seriously can't see why you can't log in.. are the credentials correct?
WoW: we want to give players a more fun time with less grinding and generic quests
GW2: we want the player to feel like they are leveling while doing something fun
Final Fantasy XIV: we want less fun and more grinding