Hello,
Sorry to hear that your application got returned. May I know the Timeline? Also I have seen many ppl getting AOR whose file were rec. after 20th June. And non of them select that option (i.e left blank). So why was it returned? Did you put different email id for both SA and PA generic form? Or something where it may conflict with what was written in application? My file has been returned once and I re-send it on June 30th I am freaking out as I did not check that option and you are the second applicant who got file returned due to this reason. I called CIC today and was told that I can leave that option blank as it clearly says it is not mandatory. And we can upload Use of Rep form later on using webforms. Agent confirmed with me 3 times that a file can not be returned if you have not check the use of rep option.
My application was returned for the same reason for missing the use of representative form.
My timeline is application received June 19th, 2017.
Application returned July 25, 2017.
Although it is not mandatory form (supposedly), if you have consulted/ used a lawyer then you have to fill out the form. In my case I consulted with a lawyer but I had not filled out the form and it was returned for that reason.
I would not take the agents words at face value because of my experience.