ALL OF MY GAMES JUST GOT DELETED

I was in the middle of playing, and the game quit. I assumed it was just maintenance, but and hour or so later, I came back on, and I found that all of my games are gone. There are no games in archive or anything. I had about 6, and it would not have been victory condition change, because I was not elligible for victory in any of them.

EXPLAIN PLS