1) Yes , they first charged DD, take note that DD is different treatment as CC, so it may take up several days.
2) PCC will be ask at different stages of the application (MR,RPRF, PCC) .
3) October has not started 100% , they probably clearing HOT NOCS at the moment , check the SS for estimates date charging.
dear me too i did not send my PC but now i have it.there is no delay you will ask about it by visa office after you got PER
the check list mentioned we are strongly to submite you pc but did not say you must send it as urgent
trust me