Problems in the campaign and multiplayer

Well,yesterday, i have 2 problems when i play halo 4.
The first one: When i play the campaign, the missions didnt show in the list, jjust i have the prologue, when im finished the campaign.
The second: In the multiplayer, my spartan appear like a recruit, but all the things that i had. And for everything the game give me the welcome for each mode.