I keep getting the message "failed to synchronize achievements" those two weeks and can not finish the challenge DLC City of lights even i traveled to Paris and finished the DLC. Today 9/7/21 i keep getting the above message and could not even update the game.
I originally purchased ACO from Steam and then i know it has to be played with Uplay. The question is: can i play ACO with only Uplay but without Steam even though i purchased from Steam? I feel quite annoy when playing game with both Steam and Uplay launching.