I got you the topic of Flat Responsive Pro 3 years ago. A week ago, WooCommerce 3.0 was updated. And now there is no product image on the product page.
I have a version: 1.2.3. The latest versions are not available to me.
After updating WooCommerce the following message appeared:
Your theme (Flat Responsive Child) contains outdated copies of some WooCommerce template files. These files may need updating to ensure they are compatible with the current version of WooCommerce. You can see which files are affected from the system status page. If in doubt, check with the author of the theme.
On the recommendation of the developers WooCommerce checked the status of the system and here is the answer:
### Templates ###
Your theme contains the file woocommerce.php, you will not be able to override the custom template woocommerce / archive-product.php since woocommerce.php received priority over archive-product.php. This prevents display problems.
flat-responsive-pro/woocommerce/checkout/form-shipping.php version 2.5.0 is out of date. The core version is 3.0.0