Hey piercetek,
Thank you for connecting with the Community! This may be a product limitation, and the Pay Invoice option would not be removed from the PDF. However, if you follow my colleague's steps, the link will guide your customers to contact the business owner to pay the invoices.
If it is a case you followed those instructions, and this is not being done, please let me know.
I will be here looking out for your reply. See you around.
