Fields of Ruin kicked everyone out
No answer.
Oh well, Fields of Ruin is no longer a daily event now.
Best guess would be map with too few players for too long. If I’m on a working instance and there aren’t many people around – or I know there’s non-working main instance – I usually try to taxi people in by announcing it on LFG tool. I guess another possibility would be something really going wrong on server side. It’s not impossible either that they’d actually implemented a timer thing that kills that map after certain time – f.ex. 24 hours. It would refresh it, when it frequently locks up. I’ve not heard anything about something like that actually being in place though.