Something not working, or an idea for Paint Plop? Write to javier.bascones@gmail.com — you'll get an answer from the person who made it, usually within a couple of days.
On the title screen, hold the gear button for two seconds. Inside the game, hold the house button for one second to go back.
Music and sound effects have separate sliders in the grown-ups panel, and the music already sits low under the effects.
No. The game has no networking code at all.
No. It is a universal purchase: buy once and it works on iPhone, iPad and Mac with the same Apple Account.
That should not happen: everything that leaves the game is behind a button you have to hold down. If you find a way out, please tell me.
iOS 15 or later, or macOS 11 or later. The game runs entirely offline.