In Score is do not leave!

From the game itself, I am amazed at how many other - it is perfect in almost every way.
It has tremendously great fun, I always continue work your way until I someday the last Assassin grave mastered - and then froze the game. No problem I thought, is indeed stored automatically and the score is safely on the Ubisoft servers. So I started the game again and realized with horror that the entire game progress one day, including three missions, the Assasinengrab and many found objects, was gone !!
Thus any fun I have been taken in the game, because I really do not want to play through it all over again, where I was a few meters from the Assassin armor.