A new day started I was playing four spartan ops games when on the 5’th game my xp screen and xp did not show up. I played two games and waited 30 mins and played another game and still nothing. I tried war games and nothing. I tried shutting down restarting, still same thing. Online I saw a code and entered a secret recruit code in waypoint. To my supprise I got 12116 xp for being on halo from day 1, and it gave me the xp for that. I thought since it gave me the xp that the problem went away and nope the same thing still happening. … A hour later playing another game Black Ops 2 I come back … Guess what it works, xp screen shows up and it gives me xp for a spartans op game. I play with my brother for 4 more level xp when it happens again. After that I gave up. … Goes Somewere and it’s now 10:00pm … I play a spartan ops mission and it’s not showing the xp screen, not giving me xp, and did not tell me that my xp cap for the day has run out so… IT’S DEFFENTLY A PROBLEM THAT NEEDS ATTENTION. 
Sorry for the caps, long long message, my whole day.
It is now 12:45 am and I’ll try it now
> … A hour later playing another game Black Ops 2 I come back …
There’s your problem right there.
That happens when you hit the daily XP cap, I’ve done it twice. You’ll occasionally earn XP for games until the next server day, but it won’t happen often.
> > … A hour later playing another game Black Ops 2 I come back …
>
> There’s your problem right there.
Hehe
Just played a game and reports xp screen and xp did not happen.
I just now played a Spartans ops game and I’m having the same problem as we speak
You probably hit the xp cap.
Can you possibly hit a xp cap at 1:16 in the morning? (just saying)
Alright here’s a update its 7:24 just did a game and now it shows the xp and xp screen.
Well it resets at a certain time dependent on timezone. I believe it is 5 AM Eastern
Thank god someone who actually knows something.
Thank you so much man.