Chances are higher that you will be granted a visa, but you never know, as I have seen people getting rejection even after medical with reasons other than medical.
printout of PDF would be fine.. I did same with mine, so I dont think you would have any issues with that but its my personal opinion. I am not too sure as I am still waiting for my medical..
and which course are you intending to do from Canada...
I guess you are from Pakistan, I would recommend you to apply online to CHC Islamabad. inbox me and I will let you know The rest
What are you studying there now, and from which uni did you do your mechanical engineering. also did you do job related to your field of studies or was it not related..
but make sure you include your personal details like full name, dob, application date, file no etc. when you send it directly from an email account rather than sending inquiry VIA the link I posted above.
Usually the subject line contains [STUDENT NAME - Student] when you contact them VIA, https://dmp-portal.cic.gc.ca/enquiries-renseignements/case-cas-eng.aspx?mission=islamabad
Anony brother it would be really helpful for other students if you share some Information here on the forum.. information about reasons of your rejection and what was your uni location and program..