Unfortunately, nobody in this forum can give you a definitive answer on the cause of the delay. Only the VO can do that (I doubt if there are VO members here). Each case is unique. I got my approval after 35 days for SDS application, but my friend got his after only 7 days for non-SDS. Both application were filed offline at the same VFS. Now, SDS is supposed to be faster than non-SDS. But as you can see, the non-SDS was processed faster than SDS. What is the reason? I don’t know. If you will search this forum, there are a lot of applicants who were waiting far longer than you are. And nobody could give the reason why. All we can do is wait. Wait for that 50% chance of approval or 50% chance of refusal (but everybody is hoping for that 50% approval). We cannot even rant about it because Canada did not force or threaten any of us to apply as international students.
Have patience, my friend! Wish you all the best in your application and hope to see you in Canada in the near future!
