you definitely got a stock one (either already in Australia or arriving soon), I got my VIN more than a month ago (in NSW registration and Invoice documents) but this still doesn't appear on the website or app so I'd say it's "normal".
If your car is in a molace ship (most are), you can check the vessel name and when it's arriving (or if have already arrived) in this website:
www.molace.com/TRK/Search
Change the "Search by" to VIN and paste your VIN in the field (then, after the search, click on "Itinerary" to know more details of it)