no you cant change from there, theres only for the person who lives in canada, if you gave your sponser's address in Canada then you would be able to change it but this one you cant, jst email chc
you need to send an e-mail to CHC with your file number date of birth name etc, and give them your complete address then they will update in your file and n your e-cas ok
if you file late to CHC you will need to wait longer because CHC already taking so much time to issue PR and so many applicants already waited since long time and still no news frm them.