Having a bit of confusion.

Games Halo 5: Guardians
1

I logged into halo 5, and noticed almost all of the game options (Matchmaking. Ex. Mythic Shotty Sniper) are gone. I got off and came back. So am I missing something here?
Only thing available is
breakout
infection
BTB
And Grifball.

2

I noticed this after my friend and I finished a game of team slayer…what gives?

3

343i knows about the issue and are working on it,check this thread out.