Dear, I check your site and I see the DHWC Page not support YITH WooCommerce Featured Video, If you want use it in product with custom template. You need change ‘WC Single Product Images shortcode’ settings Slider type to use ‘Default by theme’ (see attachment)
Dear, I check your site and I see that problem because ‘
tagDiv Shop’ plugin on your site is remove default coupon form on Checkout page. and Coupon Form shortcode in DHWC Page plugin is require default coupon form on Checkout to work.
To fix your problem. Please install and switch your site to use Child theme. then add custom PHP code in file functions.php of your child theme.
