If any of the required hooks or filters are missing in your theme, first try to fix it yourself with the information in this documentation.

Debug Mode 

The plugin comes with a helpful debugger to inspect any theme-related issues with the plugin.

• Go to the Advanced settings of Fancy Product Designer, click on Troubleshooting, here you can enable the "Debug Mode".
• After that go to a product page with “Fancy Product Designer” enabled.
• A modal window comes up with information about missing hooks and filters in your theme. This modal window will only come up if you are logged in as administrator and on a product page with “Fancy Product Designer” enabled and on the cart page.

Theme Check Modal

Solving Missing Hooks

Single Product page

If you enabled the Fancy Product Designer for a  WooCommerce product, but the designer could not be added due missing action hooks. This is often caused when using page builder plugins like Elementor. You can easily enable the product designer app by adding the shortcode [fpd] to the content.

Missing hook: woocommerce_before_single_product_summary

Context: Used for replacing the product image with the designer.

The content-single-product.php in the woocommerce templates of your theme does not include the required:

do_action( 'woocommerce_before_single_product_summary' );

Check out the standard template in plugins/woocommerce/templates/content-single-product.php, to see how it looks properly.

<?php
        /**
         * woocommerce_before_single_product_summary hook
         *
         * @hooked woocommerce_show_product_sale_flash - 10
         * @hooked woocommerce_show_product_images - 20
         */
        do_action( 'woocommerce_before_single_product_summary' );
?>

Missing hook: woocommerce_single_product_summary

Context: Used for adding the product designer app or other UI elements after the short description or product title.

The content-single-product.php in the woocommerce templates of your theme does not include the required:

do_action( 'woocommerce_single_product_summary' );

Check out the standard template in plugins/woocommerce/templates/content-single-product.php, to see how it is supposed to look.

<div class="summary entry-summary">

    <?php
        /**
         * woocommerce_single_product_summary hook
         *
         * @hooked woocommerce_template_single_title - 5
         * @hooked woocommerce_template_single_rating - 10
         * @hooked woocommerce_template_single_price - 10
         * @hooked woocommerce_template_single_excerpt - 20
         * @hooked woocommerce_template_single_add_to_cart - 30
         * @hooked woocommerce_template_single_meta - 40
         * @hooked woocommerce_template_single_sharing - 50
         */
        do_action( 'woocommerce_single_product_summary' );
    ?>

</div><!-- .summary -->

Missing hook: woocommerce_before_add_to_cart_button (Required)

Context: Used for adding additional form fields for the checkout process and to position the customize button.

The add-to-cart templates does not include the required :

do_action( 'woocommerce_before_add_to_cart_button' );

Check out the standard templates in "plugins/woocommerce/templates/single-product/add-to-cart/", to see how it is supposed to look.

<td class="product-thumbnail">
    <?php
        $thumbnail = apply_filters( 'woocommerce_cart_item_thumbnail', $_product->get_image(), $cart_item, $cart_item_key );

        if ( ! $_product->is_visible() )
            echo $thumbnail;
        else
            printf( '<a href="%s">%s</a>', $_product->get_permalink(), $thumbnail );
    ?>
</td>