4 movie to watch (pop up)

I unlocked several terminals and it went fine but now I have a pop up every time that I come to the menu (4 movies to watch, player id and so on…). While I can go on player id and avatar and ‘read’ that notification and see what i unlocked, I can’t do this with the movies. I watched all that I unlocked by Extra->Movies and then it takes me to the Halo Channel (even if I still wonder why this?). However that notification is still there, how can I delete it??