That's completely false. You can remain outside of Canada for a few years and still keep your PR status. To keep your PR status, you must live in Canada for 2 out of every 5 rolling years.
oh no, i never liked the agent anyway. its just that my bf was losing hope, he cant come into Canada under Express Entry cuz he's agent told him that its hard, especially if looking for a Emplyer. that is why he handed this Conjugal Application