@sick man
Sorry to say, but i think you are unnecessarily panicking.
-- you had sent the package on May 1 by Aus Post.. for which you don't know when it got delivered to CIO. Its universal truth that Departmental Posts take much longer to deliver internationally.... upto a few weeks.
Assume, if you have Couriered it from Aus on May 1, it would take atleast 4-5 days to reach NS... and CIO is just processing May 5 Applicants as of now. ..
so there''s still time for your Application to be picked up going by that assumption.
-- Regarding your add.. you filled the correct add (PO Box) which is as per the Guidelines for sending thru Regular Mail- put PO Box add.... so what makes you feel that it might be lost ?
-- Moreover, you have sent the Appln quite early (except for delays in Post).. you should be well within the Cap even for Hottest NOC in Canada !
If all goes well.. you will receive PER sooner or later, suggest you to hold on to your horses

Just wait for sometime for Aus Post to revert to you on your delivery status.
Good luck !
sickman said:
apologies,
I submitted my full application on the 1st May. i sent it via Australian post with tracking number to
Centralized Intake Office – Federal Skilled Worker (FSW)
P.O. BOX 7500
Sydney, NS B1P 0A9
Canada
so far, when i check the tracking number, I only see " in transit" I emailed Aust. Post and they're following up with the Canadian Post.
I also emailed CIO and nothing came back. my cc card not being charged with anything. i guess:
my application was sent to the post office and it might be lost. not sure if this the info you need, and i filled all what i have in the sheet. I'm new in here as you can see and totally freaking out. the only number i managed to find was the 1-888-242‑2100
i can send new application as all original forms been sent in the first problematic one. plz advice