CasinoAce is not a child theme of PokaTheme, it is a theme that works great with Poka Review Plugin.
All the affiliate functionality is from the plugin.
Of course you can use the theme also without the plugin but if you want the affiliate functionality you should purchase and install also the Poka Review Plugin.
So in order to have a site just like the : https://demos.pokatheme.com/casino-ace-theme/
1. You should activate the theme
2. Activate Poka review plugin
3. Import demo content