Sorry about that! It was a little mistake for a short duration where it was including a ghost from the previous event :( It wasn't supposed to show up at all.
Hey there - unfortunately this is currently confusing, but even with a room password, people in your guild can still join you. If you go into Guild -> Manage, you can turn off the open join. The current party system still needs some improvement, please bear with me on that :)
I think newer version of FF started to block by default unity webplayer on your url bar click plugin icon and allow unity player.