Duplex Printing Issue on macOS

[TheKDs]

I am facing an issue with duplex printing on macOS using the HP LaserJet M208dw printer. Duplex printing works perfectly on Windows and also when I print PDFs directly from my Mac. However, when I attempt to print from my application using JSPrintManager on macOS, the duplex feature does not work.

I have implemented the solution you suggested, but the issue persists. I also tested your online demo for Advanced PDF Printing from macOS, and duplex printing still doesn't work with my printer, even though duplex printing is enabled and supported.

Could you please assist me in resolving this issue?

Thank you for your support.