Tried inputting the following postcode: 2536, but it blanks out the 5 after I put in the 2. Won't let me put in 2536. What's up with that?
I have country as Australia selected correctly but its not letting all Australian Postcodes to be input.
Help would be appreciated.

 

Try putting in the city

 

Tried putting in city (Batemans bay) but I have a similar problem it only gives me a couple of options with cities beginning with B - none of them the one I want.

 

Don't know about Australia, in US you have to put in the state to get the city to populate correctly. Try putting in the state or province.

 

Looks like the system "remembers" your last area and narrows down selections to this area.
I tried to "reset" the system by typing in my country : Australia, and lo and behold I could access postcodes Australia wide.
So if this happens to you, you need to reset the system to the largest possible search area (Country) to see all the postcodes.