Hello @PoscoCreative,
I have logged in to your site and I was able to see the aspect ratio of the image in your product gallery. The plugin indeed is changing the dimensions of the image which is why it is distorted. Regretfully this is a 3rd party plugin and we do not have any control over it as the plugin is overriding the WooCommerce gallery feature. You may need to contact the creators of the plugin to get your issue resolved.
In the meantime, please use the default single product gallery which looks like this:
And if you remove this custom PHP code in your child theme’s functions.php file,
/**
* Remove WooCommerce flexslider script & product gallery slider
*/
function wpb_wiz_after_theme_setup(){
remove_theme_support( 'wc-product-gallery-slider' );
}
add_action( 'after_setup_theme', 'wpb_wiz_after_theme_setup', 99 );
You will have something like this:
Hope this helps.