Hello,
Thank you very much for choosing our theme and for contacting us.
Please make the full backup of your site as well as the Theme settings export and check the issue on the Storefront theme to detect if our theme causes the problem. Storefront is a free theme developed by Woocommerce.
Most likely the CVS format with the product is no compatible with our theme options due to different procedures of the image adding. Please provide your site admin access to the private area I will check a product and perhaps we would able to suggest a way-out.
Best Regards