Hi @miky
Try not to feel ripped off, the theme developers are just doing their job. They have developed a theme which allows you to create a website just as advertised.
If you want to also use ACF to extend the functionality, that’s fine, however this plugin is not a ‘one click install’ and requires much reading, coding and Code knowledge.
Perhaps you should contract a web developer to help you out on this one.
Thanks
E