I'd successfully used Emutoll many times over prior years, but the last time I travelled to Sydney (Dec '22), I had a lot of trouble setting up the correct date/time range via the Emutoll mobile site. I was hampered by time-outs, app errors, and incorrect date/times eventually being saved (and if the date/time range overlapped with subsequent attempts to get it right, it refused to accept the additional instance). I eventually gave up and resolved to call the Help line over the coming days.
Then on the way in I saw the LinktGo signs, and that night I downloaded and configured the app. Long story short, LinktGo worked well and I'll use this app in the future. Goodbye Emutoll.