I know its not perfect but

For the last 3 days i havent been able to see any of the ops or challenges through ie9 or firefox on pc, or through safari or atomic on ipad

the only way i can see how we are doing is to access elite through ps3 app

if you get white screen from the app update (like me)

i have to do is go to load up mw3>select elite from left menu>and the app will load and you then have access

real pain in the ass i know but currently this is the only way i can see/enlist in ops and challenges

hope this helps some

tweet from atviassist regarding ps3 app whitescreen issue

Activision Support‏@ATVIAssist

@Cookiedood2 We're working on implementing a permanent fix, for now; have you tried launching the Elite app from in-game? ^SL