I'm playing on PC. What do you mean activated? I installed the main game and all the add-ons at the beginning. Didn't know I needed to do something else?
When you first left vault 101 did the screen flash up that broken steel was loaded and the level cap had been raised to 30?
It would also have told you that the other 4 DLC's were loaded (telling you the riverboat had docked for point lookout etc).
If not then you probably have the DLC's installed but not activated, to do so you need to load the game,from the main menu click on data files, it should give you the list of the 5 available DLC'sm click on each one to activate them, then start a new game as normal.
Think that's how you do it. :goodjob: