I bet the database is corrupt and cannot be recovered. They probably are trying to sort out this mess working transactions to transactions manually. But probably can't sort this out.
I am also guessing 99% of the funds are intact, but they can't possibly come back online even of 0.5 % funds are missing because they don't know who's done what.
Just a hunch.
I also have this feeling. I think the database corrupted somehow. Also think the trades happening at the point of shutdown must have been a nightmare to deal with. Would be nice if they could just give an update on the situation and where they are in the upgrading process. Even if it is 3rd world broken English.