Hey..
Please let me know if it works as expected.
We will try and let you know. Thanks for your commitment.
do you mean textfield on admin’s orders list (“WooCommerce > Orders”)
Yes of course! Sorry I expressed it badly. It should be an backend only function.
displayed on PDF invoice
Exactly. A shortcode would be awesome.
The customer only can use prepayment respectively PayPal in our shop. He gets the invoice by mail before he gets the ordered items. So because of that, it would be a nice little additional information for the customer to see, when his payment arrived.
Best regards
Ben