I have problem with save games. I can play, save etc.
But when I close game and Uplay of course and on this day or another I want back to my save games, they disappear (I have access only to my old save games - from January).
Sync with cloud works fine (no error messages).
TechSupport don't do anything (I waiting for any good news one month).
I dont know if have made any chances but this one u refer is a known bug from patch 1.51-1.52 Disable could sync even if for u works fine. Myself i disabled it and have no problem from now on (although lost all my campaign progress and leveling of my heroes from the patch...)
I MAY have found a very helpful solution. I had the same problem. That is,I wanted to playthe second mission of a givencampaig, but the previous save was gone, and I had to either start mission 2 with a level 1 hero (very bad idea), or play the whole thing over again. Hhere is the solution. Say you want to play Sanctuary mission 2. Choose the sanctuary campaign, FIRST mission,and CONTINUE (not restart map). That will take you to the very last place you were; usually the big boss battle or game ending screen. When it is over, CONTINUEinto the very next mission, even if tht is not the one you want to playnext. Then after the opening scenes, just SAVE the game. When you get ready to lay, you just have to load that save, and you start mission 2 with a level 9 or 10 hero. This worked for me, and I hope it works for you. BTW - I think we all sould be playing with the CLOUD disabled, because it is really bugged. Ihope this helps someone.