Yeah, just what I thought. I created an account with 7plus.com, specifying a Sydney postal code but they must check IP addresses. I got into the menus to select show/videos but each time I tried playing one, a grey / red circle appeared on screen, followed by a white X about 30 seconds later. Did this connected to my home's WiFi and then to LTE but it was the same. I don't have access to a VPN at the moment but if I get one, I'll give it another try.
I did check using my browser, which might be an old version since I'm still on 2020.40.8, with my Disney+ account. Signed in and was able to play (with sound) a movie.