Hi, I have recently received the ready for visa email which asks to submit the passport to canada for further PR processing. However I currently reside in USA, I have tried fedex and UPS so far and both refused to ship my package with prepaid return shipping due to custom/duties invoice restrictions. Has anyone faced this issue before, I have tried contracting IRCC.CIO-BRCD.IRCC@cic.gc.ca but haven't response so far.