I just bought the fate of atlantis dlc and went in game it showed i had the dlc but when i did the first free mission it didn't let me continue. Its almost like i never even bought the dlc
Where did you brought the game from ? Steam or Uplay ? Same for DLC. Steam or Uplay ?
Your level might matter, too, as well as the point that you're at in the main story. Have you finished the Family arc? What about the other Arc that begins on Thera?