Hi there and welcome
HP put a country lock on ink cartridges as in some countries they are cheaper then others so to stop bulk purchasing and shipping.
You will need to contact HP which you can do via 1300 721 147
Before calling, make sure to have the printer connected to the computer via a USB cable, not wireless so it can be programmed via the codes they provide you once your verified on the phone.
From then on the printer will work in Australia.
If you have any problems, or would like any additional information or assistance, please do not hesitate to let me know.
Else if you can take a second to rate my service by clicking one of the stars at the top of the screen then submit, that would be greatly appreciated.