why is my status do not changed to AP and still says READY for interview though 18days passed after interview?

My interview was on 11th April 2017 at Addis Ababa US embassy for CR1 visa category. I have been told my case will be under Administrative process but and given a white slip but do not requested any document to submit. The CO did not return my passport. Now its morethan two weeks since i got interviewed but my status on CEAC is still shows READY for interview.

  1. Why is it not changed to AP ?
  2. Is the Admin process(background check) concern only the applicant(me) or include the petitioner(my wife)?
    Thank you!