mpbm23

You can add a special field mpn2 on products and then on createsk.php file after

$onfeed =$wpdb->get_results($sql);

add

$sql = $wpdb->prepare(  "SELECT *
		FROM " . $wpdb->prefix . "postmeta
		WHERE <code>post_id</code> =" . $prod->ID . " AND <code>meta_key</code> LIKE 'mpn2';",0);
 $mpn2=$wpdb->get_results($sql);

and after

$product->mpn = NULL;            $product->mpn->addCData($sku->meta_value);

add

$product->mpn2 = NULL;            $product->mpn2->addCData($mpn2->meta_value);

What type of variations do you need?

WordPress Cron must be enabled for autogeneration of the XML feed

link

Please read the instructions

The Response method must be set to GET
They set you on POST.

Contact Piraeus Bank Support for Result code 1003

Check if SOAP is enabled in your hosting.
more here

Did you send the correct IP address to Piraeus bank? Maybe they are receiving the shared IP of the Server. Please contact also the bank.

SOAP is not installed in your server contact your hosting support.

Can you also send a link to your xml ?
The plugin is not compatible with polylang.

Set the setting in the plugin menu
“When out of stock” to set the correct text when you have out of stock products.

Check this link
Change your php version or add the ssl instructions given in the link

You do not need an extra plugin.
You just add the field in the product.
See in screenshot

If you disable a product from feed it is disabled on both feeds.

Is SOAP enabled in your dedicated server?