Basic description of the problem:
CooconCanvasPlus plugin doesn’t work to close the game on android. Exported with canvas+. Canvas+ plugin connected too.
It is working, don’t use “minify”.
Like @OhhBaby is saying, don’t check minify script at the export window.
Moreover it’s not a good idea to handle it this way.
So imagine if the player accidentally presses the back button,
the game closes without any prompt dialog. So the player assume the game crashed.
However that’s just my personal opinion