Thanks, Jeremy Hooper, Yes I have submitted a paper-based application to Adelaide. its for 574 VISA and I submitted my first application and it took 6 days for the acknowledgement and i was checking the acknowledgement for the other students on the Facebook page it was taking 4-6 days on average. It is a delay because for the reapply?I assume that it was a paper application to Adelaide. It is only 10 days since you lodged your application. Be patient. If you have received an acknowledgement in the next 10 days contact the department and ask them if they have received it.