Maybe initially they started in the order of submission but changed the strategy . I guess they might be picking up applications based on the expiry date of the PGWP. The ones expiring first could be dealt with first... this is just a guess with no empircal proof. But appears logical.I applied around 12:14 PM EST still waiting, I think they have started offering AOR with respect to Postal Code. Since, some of my friend applied around 12:30 and they got AORs