Hello,
Try this https://xstore.helpscoutdocs.com/article/97-support-of-the-woocommerce-additional-variation-images-plugin
or disable the plugin and use our variation swatches – https://youtu.be/LgzC4iK-j6A Enable the Variation gallery option in Theme Options > WooCommerce > Shop Elements. After that edit product and add the gallery images for your variations – https://prnt.sc/xhomle
Regards