You know, as a new Mac convert I've been looking for this, and could never find it (I guess I expected it to be in Displays, not Accessibility). Thanks!
One thing I have noticed is that Apple puts a lot more things in Accessibility, but they all are accessibility features when you think about them. (I especially noticed this with my Airpods Pro.) So instead of being the settings that people with major disabilities use, it's the settings that a lot of people use to make their computer more accessible to them, and by being in there they're more likely to find other settings that make their computer more accessible to them.
Hey, co-founder here - we think we've fixed this message delivery issue for Australia. Could you try again and let me know if you're still having issues? Sorry about that!
If the in-app purchase to remove ads is shareable across the family, then that’s fine. If not, I’d prefer to just buy the app and have it share across my kids iPads instead.