Xbox 1. cant download any mission

hitman - game of the year edition was free for me in the store and i downloaded it, it says that its installed and i can play it but i can only play the showstopper.
i cant download any of the other mission and when i go to the store all it says that ‘‘not sold separately’’
i also cant play the patient zero campaign even when i bought two things that would have allowed me to download the missions
please help me

Go under manage my game then go to ready to install and all of the rest of the episodes should be there. And then install all.