Call of duty black ops 3 single player

Hi everyone, I have a problem with Call of duty black ops 3 single player. 1 week ago I played ib single player without internet (offline), I successfully completed 2 level on a veteran difficulty, but my progress didn't save in online. I made an experiment, I
turned off internet and my progress appeared, after that I turned on internet and my progress again lost !!! How can I turn my progress in online, of course I can finish game offline but I won't get achievements. If you have any advice please share with me.
Peace everyone.

:)

 

Top ten 360 games

1) Call of Duty Black Ops 2

2) Call of Duty Modern Warfare 3

3) Call of Duty Black Ops

4) Call of Duty Modern Warfare 2

5) Call of Duty World at War

6) Call of Duty 4

7) Call of Duty 3

8) Call of Duty 2

9) Call of Duty

10) Call of Duty Elite

 

There can be only one!!

Call of Duty: Black Ops 2. Yes it's Call of Duty, but it does offer zombies as well as multi and single player. I also Haven't played Call of Duty Multiplayer since Modern Warfare 2. I've got the original Black Ops, but I bought it for $2 and only play Nazi
Zombies on it. I like to play Call of Duty, I just don't buy every release like some people do.

 

You cant have your offline saves on online and you cant have online saves on offline mode . this game have 2 modes off line mode and online mode if you want to play single player campaign online you need to start a new game . I would recommend finish
the singale player campaign in offline mode . this game has a good off line features to it . you can try the offline local multiplayer mode set the game in bot mode its fun . do you have disc version of the game or the digital version of the game.
if you have the disc version you can uninstall it offline and you dont have to update it with digital the version you cant uninstall it offline my xbox one s is on offline mode because slow internet.