Affiliate name shows up on pdf invoice

Hi, I am trying to get the affiliate’s name to show up on the pdf invoice, to ease packing orders. I am using woocommerce and woocommerce pdf invoices. I asked for help earlier on this same topic. You gave me a shortcode to use in an e-mailed invoice. I tried adding the code to the pdf template, but it didn’t work. I also couldn’t reply to that thread.
Sorry that I am not more knowledgeable in this area.

Here is the template that I am trying to edit to include the referring affiliate’s name on the invoice.

type, $this->order ); ?>

has_header_logo() ) {
$this->header_logo();
} else {
echo $this->get_title();
}
?>

shop_name(); ?>
shop_address(); ?>

has_header_logo() ) echo $this->get_title(); ?>

type, $this->order ); ?>

<!– –>
billing_address(); ?>
settings[’display_email’]) ) { ?>
billing_email(); ?>

settings[’display_phone’]) ) { ?>
billing_phone(); ?>

settings[’display_shipping_address’]) && $this->ships_to_different_address()) { ?>

shipping_address(); ?>

type, $this->order ); ?>
settings[’display_number’]) ) { ?>

invoice_number(); ?>

settings[’display_date’]) ) { ?>

invoice_date(); ?>

order_number(); ?>

order_date(); ?>

payment_method(); ?>

type, $this->order ); ?>

type, $this->order ); ?>

get_order_items(); if( sizeof( $items ) > 0 ) : foreach( $items as $item_id => $item ) : ?>
<tr class=”type, $this->order, $item_id ); ?>”>

type, $item, $this->order ); ?>

type, $item, $this->order ); ?>

type, $this->order ); ?>
get_shipping_notes() ) : ?>

shipping_notes(); ?>

type, $this->order ); ?>

get_woocommerce_totals() as $key => $total ) : ?>
<tr class=””>

type, $this->order ); ?>

get_footer() ): ?>

footer(); ?>

type, $this->order ); ?>

Thank you so much for all your help!
Jodie