I am assuming it was your server maintenance that reset all the feeds in the location and raid bosses. It also turned off all the 'public sharing ' on the bosses so we can't get more people in the bosses that need help. If you are already in a Raid boss you can continue to hit it, but the regular bosses you can't. The result is many bosses will fail because of this. I sent a ticket in but thought posting it here as well may get something done before all the effort of those who already joined them goes to waste.
Sorry for the inconvenience, we'll look into that to see if we can prevent that from happening next time. To get people back in on Bosses, the Boss owner should just need to toggle their Boss back to "Public" to solve the issue. If this does not work, please let us know.
I'm sure that would work- trouble is most people didn't realize this was going on and by the time they notice it is too late. We had a reset in VC today- maybe run some of your 'Announcement' messages in WC to let people know they have to turn sharing back on..