Hello!
Did you use the other software under your AUS account?
The reason I am asking is this: if BetFair restricts betting In-Play based on your residence, i.e. the geographical location from which you log in to the exchange, then
BetVPS will solve this problem.
If BetFair restricts it based on the fact that you are an Australian citizen (i.e. you registered with an AUS passport), then it does not matter which location you log in from.
Basically, if you've ever travelled outside of AUS and managed to access BetFair, then BetVPS will definitely sort this out.