For the people who stuck for the response from NDVO. I just want to share my experience.
My application had issue, that I should have received an email on 22-Jan-2018 (which was of PPR), but I hadn't. I tried to raise many CSE to Canada as well as to NDVO. I always get response from Canada CSE within 7 days, but never from NDVO. Even I was sending email to NDVO but never got any response.
Finally, I got a call from NDVO on 20th April 2018 from NDVO. The officer asked me for the mail on 22nd Jan but I told that I hadn't received then they resent it immediately.
So, the moral of the story is keep sending the CSE and emails to Canada and to NDVO. Also main thing is don't forget to attach the previous responses in CSE otherwise the Canada CSE people will start the fresh conversation. Also, you won't get acknowledgement of NDVO CSE.
Note: My first email to NDVO was on 31st January 2018 as I had doubt that I am missing the PPR as all people got the PPR on the same date as per the tracker.
Best of luck to all who are waiting for PPR.