VW Sport Pro – Slider won’t work

I wonder if you can help me.

Having messed around with the VW Sport (free) theme, I have made the move to the PRO edition but I cannot make the slider work.

In the free edition, you create a Page or Post, use the Feature Image to provide a slider image and then within the Theme, link the Slider to that page.

But the Pro edition doesn’t work like that. You choose the image in the Theme Customiser and (presumably) don’t put it into the Post or Page. I’ve tried it with and without the Feature Image, I’ve tried linking to a page and not linking to a page. But whenever I turn the Slider On, nothing happens. I still don’t see the Slider at the top of the homepage in the same way that I do with the Free theme.

What am I doing wrong? Please can you help.