Thanks for clarify. Yes you can include explanation to justify your valid reasons. however, The reason were asked that time to justify if you are complying to the conditions of your permit, most likely after receiving report from your School. Im not sure how you will overcome gap in your studies when applying for your PGWP this time.I completed the same program. Actually i was in my last year when one day i just received a letter in my cic account asking for my transcript and my compliance with the study permit but i had valid reasons with supporting documents and now i have Completed my program and i will applying for my pgwp. I just want to know if i give reference to the old explanation letter for pgwp.