You did not try in the way. You have Application Number and UCI now. So it is very easy. People even link without these things as well, like me.I received my AOR 08/08/17 and still can't make the link. someone you help me? Tks
http://www.cic.gc.ca/english/e-services/account.asp
Choose "continue to GC key" in this link.
Choose "Sigh Up"
Choose "Accept"
Create your username (Ex. rohanindian, or......) then press Continue
Create Password (Ex. Suresh3384, etc.) then press Continue
Create your Recovery questions
If you go ahead 2-3 steps like this then work will be done.
Note : Copy the information about application, word by word from Generic Form which you sent with