Hi, the problem your having is that your account for Black OPS 2 is not linked to your CoD ELITE account and therefore you cannot recieve the Founder Status.
your membership has nothing to do with this, I was a member using the paid subsciption through Xbox LIVE it cost me 4000 mircosoft points. I instantly recieved my Founder status as soon as i logged into my CoD ELITE account. Howver its been a year now and my subscription has ended along with the removal of my status on the CoD ELITE website, but i still have my emblems/tiltles from MW3.
I believe in order to get your status viewable on Black OPS 2 is to log into Cod ELITE and reconnect you PSN/Xbox LIVE account using the editiable tools in the Profile section on top of the page then play Black OPS 2 and the link should be complete