Thanks for the suggestion. It worked! After my email to CIC Edmonton, they replied within 30 minutes with the following text,
"Please be advised that the PR Card is in progress and it will be mailed out soon."
I am happy with this reply! But my only worry is I am yet to receive my AoR(Acknowledgement of Receipt) and still unable to link my application with my gckey account. It always says "no application found". Does it happen that you directly get PR card mailed without getting AoR first?