I am also having trouble. Logged in a couple of toons 30 min ago, AFK'd in guild hall to do some chores, came back to log in the last couple of toons and cannot get in.
Someone mentioned in chat that all their loyalty tokens were gone also - that is a sign of server not making a full connection. I was able to log in another account with no problem though Edit: click like on the first post here so they see it