The applicant will link the application. The below link has some details how to link the application.We received the AOR, but we are unable to link the application to online account. Is the applicant in the linking page the sponsor and primary applicant the child? Any pointers is much appreciated!
Thanks!
https://www.canadavisa.com/canada-immigration-discussion-board/threads/linking-application-issue.485928/
Note: When you provide place of birth, Write like (City, Province), For example Toronto, Ontario or Mumbai, Maharastra. This worked for me.