Yeah, Stunna stated that Australians won't be able to register.
Due to regulatory laws and legal advice, Primedice 3 will not be allowing Australian users to register.
Sorry to all those who this affects.
However, I'm not sure if you can use a VPN/proxy and register and then play from there. I think it would work - but I personally haven't tried it.
country.
A london based server for example would work.