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You probably talking about Woocommerce Products Slider this plugin only work with Woocommerce , please check you have already installed and create your first product.
Let me know for more help.
Can you please send me a temporary admin access to your site? please send any login information via http://pickplugins.com/contact/
I changed the Catalog visibility from Shop to Shop and search results, this made no difference, apart from the box is now massive and taking up half of my home page – but still no products are being shown
Please check "Query Product" tab option try different options.
Hide out of stock items > No Check
Featured Product display > No check
Catalog visibility > Shop and search results
Let me know the result.
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