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Overview of the issue
When using Facebook for WooCommerce, clicking a translated product in Facebook redirects you to the product in the default language or to an error page.
Workaround
In your child theme functions.php file, add the following:
add_filter ('facebook_for_woocommerce_integration_prepare_product', 'fix_product_url', 11, 2);
function fix_product_url($product_data, $id) {
$product_lang = apply_filters( 'wpml_post_language_details', null, $id );
$product_data['url'] = apply_filters( 'wpml_permalink', $product_data['url'], $product_lang['language_code'] );
return $product_data;
}
Next steps to resolve this issue
We’ve contacted WooCommerce for a permanent fix, but have yet to hear back. Since the issue needs to be resolved with changes to the plugin code, we cannot assist any further other than by providing the workaround detailed above.
If you are experiencing issues and would like to push this fix forward to WooCommerce, feel free to leave a support ticket with the author here: https://woocommerce.com/my-account/create-a-ticket/ (you will need to be logged into WordPress.com).