I submitted my renewal on 6/29/17
USCIS received on 7/3/17
Done Bio : 7/14/17

It has been 27 days , it's still pending. Anxiously waiting. Very stressful ! Don't know what is going to happen in Sept.

Why a lot of people got approved incredibly fast ( less than 1 week) , and mine is still pending?

What if the case is still pending after Sept 5th , what is going to happen?