I was sponsored by my common-law partner. I organized all the documents. I included 40 pictures in the application. I put caption at the back of each photos, like who, what, when, where.
Development of Relationship: I am the principal applicant and I was the one who organized the papers I wrote our 3 pages love story and stapled them in the last page of the form 5490.
Whatever evidences that is connected to my love story, like photos hotel receipts, wedding invites from...
I read a case like this in this site. They call the immigration here in canada and explain the situation. The immigration asked for the passport to be mailed in Ottowa or somewhere here in canada for the visa. Try to call the immigration.
As I understand you were on your 4th year in April 2015 if this is the case, this is the site you have to read
http://www.cic.gc.ca/english/DEPARTMENT/media/backgrounders/2011/2011-03-24.asp?_ga=1.32688958.1229865345.1407367213