@Vivienne10
You ave two active listing, they are both in the serach system:
https://www.airbnb.com/s/homes?host_id=48393915&map_toggle=true
The listings are located in Woodchurch. If you search for a wider area, like "Kent", only first 300 listings are shown. If yours is not among them, then you have to zoom in on the map to see them.
That's how the search system works. If you search for Woodchurch, your listing will be shown among the results (i noticed one of your listings is on the first page)
I think results will be the same in Australia, but ofcourse i am unable to test.....but maybe somebody from Australia here can give it a try.
Hope this helps,
Emiel