To make the plugin compatible you need to perform the following changes:

1. Remove files from our theme folder
basel/woocommerce/product-image.php
basel/woocommerce/product-thumbnails.php.

2. Disable JS minification in Theme Settings -> Performance.

3. Edit the file js/functions.js and replace the following lines

productImages: function() {

with this one

productImages: function() { return;

and this line

productImagesGallery: function() {

replace to this

productImagesGallery: function() { return;

4. Put the following code to your basel/functions.php file

add_theme_support( 'wc-product-gallery-slider' );

add_action( 'wp_enqueue_scripts', 'basel_child_enqueue_scripts', 10000 );

function basel_child_enqueue_scripts() {
	wp_enqueue_script( 'flexslider' );
}

5. Add the following snippet to the custom CSS section in Theme Settings

.woocommerce div.product div.images .flex-control-thumbs li {
    width: 15%;
    float: left;
    margin: 10px 0 0;
    list-style: none;
}

Regards