Lost my first citadel to a crash

Playing almost everyday since release of EA, found my first stone citadel today. Started my map and a few minutes in, the server crashed and I got kicked out of the game.

When I returned it said the map failed and the boss is not there anymore.

Hope that when I find the next in one month it doesn`t crash again, so I can get my first fragment of the 3 I need to do the boss.