How can I display thumbnails of colour options

Hi @kath_eck,

That particular plugin is from hulkapps.com and you can reach out to their support team to check if they have a working app for WooCommerce, as it appears their app is actually made for Shopify stores.

If they do not have a WooCommerce app you may want to consider these variation swatches plugins, the first one from the WooCommerce.com marketplace comes with a 30-day money back guarantee:

– https://woocommerce.com/products/variation-swatches-and-photos/
– https://www.ads-software.com/plugins/woo-variation-swatches/

Hope this helps!