A great purchased APP has gone the way of the Dodo Bird by the looks of it.
I have resigned myself to using Australia Post's official APP which needs improvements, but is working.
If you use the AusPost APP, send enhancement feedback to their e-mail, them seemed receptive. The more feedback we give, the more chance they will make it better.
22AUG2016: Re-Retried AusPost (and others), all good again. Thank you.