But they had "unwilling" to travel in the mail. That should be a reason.Frankly speaking, September is too far and there are chances that corona risk would be low at that time. Just assess the situation by mid Aug and if you don't feel safe then raise a webform for your unwillingness to travel. At this moment lot of international flights are grounded anyway but if International flights are resumed by Aug then I don't know if IRCC would consider unwillingness to travel a valid reason for CoPR extension. Just assess the situation till Aug and if its safe to travel then please go ahead with your current CoPR.