My characters disappear

The previous Friday, play gears of war 4, like almost every day when I started the game I realized that I did not have any characters, that most of them were legendary, which were 6 of the COG and 5 of the swarms, what I think what was a game error or some kind of hacking to my gears of war account or something because I just suffered this inconvenience in gears of war, can you please help me with this problem …