My family and I are traveling after two days to Canada (Montreal). Me and my wife have our work permits approved. My children (6 & 10 yr) got their study permits approved). We all got the Visas stamped 12 days ago. We all got the POE except one of my sons (10 yr). I don't know why? If I don't get it within the two days, should I cancel the tickets? And do we expect to have problems with that? I made two inquiries on the webform, but no response till now.