My form shall be transformed to a PDF file. The PDF shall include a logo and the terms of the services as well as the responses (name, address, e-Mail) and some radio button choices etc.).
The PDF shall be sent to
me
the client
In addition, the PDF shall include a Barcode (QR or other) that includes some of the responses (name, addresses, e-Mail) so that this information can be scanned from a hand scanner.
I haven’t personally worked with the QR code plugin before, but the documentation mentions adding the QRCode field directly to your Form Editor and it will automatically be included in any of the core PDFs.