I am born Candian and am sponsoring my Mexican National wife. I sent our app by courier May 24th and it was received in Sydney May 27th. We have received nothing. I thought they would acknowledge receiving the package but I guess not. I try the online check online using the number on the receipt for fees we paid, still nothing. From what I have read there is no set period for them to do this but I would think a month is plenty of time