Your best bet would be to open a support ticket with us and give us more information on the requirements, etc, and we can help you get this added.
You'd need to edit modules/billing/models/PDFInvoice.php to add any PHP code to generate the QR Code, and then reference that in the invoice template (plugins/invoices).
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.