I used an envelope from the post office that is for regjstered mail. The top was the ppc address and the bottom was for my address.
Not sure what kind of envelope you are using.
From an article that I read where an immigration lawyer was raising this issue with immigration . This pattern of 120 days only started late 2022. Not sure why the delay.
https://www.facebook.com/groups/490767519796045/permalink/624479033091559/?mibextid=Nif5oz
There are many in this facebook going through the pr process .
My dependents (kids)don't show up in the portal to confirm pr. When will they show up? Were your kids listed in the portal when confirming residence and photo or you had to wait?