Can't play Spartan Ops or War games

Well just like the title says to this thread. I can’t play Spartan Ops or War games when i’m partied up with a friend what is the deal with that. Me and my friend were ready to kick some -Yoink- in Spartan Ops and we get a message saying that Matching is not allowed. I know I’m sign up with the Halo 4 Infinity Challenge hosted by -Yoink!- Gaming. Is there a way to fix this problem so that I know that A) me and my friend/friends can play or B) release a title update