Hi Vaib, as promised here's an update after we sent my PA's Sched A through post. Just a bit of recap of my situation...
> Submitted Sched A through webform 3x but CIC never received it.
> Submitted Sched A (IMM 5669) through mail with tracking and signature and was received by CIC on April 20th.
> Asked CIC through written consent if they can give us an extension to submit PCC.
So earlier today, I called CIC and the agent was very helpful to put me on hold and called the officer handling our file. The agent said IMM 5669 was received and attached together with our application. Our request for extension was granted by the officer "internally". According to the agent, the officer put a note on our file and once they receive the PCC they will start processing the application on PA's local VO.
I sent this through the address P.O. Box 3000 (for outland applications) and they were able to forward it with the correct department. I double checked with the agent and he said, this is also where we should send our PCC as soon as we get it from my PA's country of residence.
I hope that helps to whoever is in the same situation. I am just posting here what the agent told me. I guess different agents point you in different directions. But oh well, I am so relieved that they received our file and granted our extension for submission of PCC.