About to sell Halion 4, one Q popped up

Hi! As you know the H4 does not work with Q9 on Sierra and as the new sampler track+ GA4 is sufficient for my needs i’m not going to upgrade the H. So i have a buyer for the boxed version. How can i transfer the license if the guy is living far away- not possible to put two usb licensers on one computer. Is there no way to transfer this via network? Tnx!