I've meticulously followed the guides here a couple times and always get stuck at the end where I get the customer code. I've also chatted with over a dozen Apple reps who have been confident they've entered my code successfully and whitelisted me. Yet it still gives me the same code, every single time. I've tried this both on a desktop PC and a laptop, same result. When I started this from the beginning, my generated serial had no record in the mac lookup website, and now it shows up as a valid serial (presumably from the Apple reps whitelisting me?).
Anyway - I'm not sure where or how to start over and somehow do things differently so I don't end right back where I was with yet another customer code. One thing I recently noticed though - is that some other people in here had similar issues and it turned out the internet wasn't set to eth0, but it shows eth0 for both the laptop and desktop attempts. But I've also noticed that an additional nullethernet step/fix is needed but it appears as though that's only for systems that lack an ethernet port or are using a usb wifi dongle? Both my laptop and desktop have a physical ethernet port; but I'm not using the ethernet port on either. I'm using wifi on both the desktop and laptop. Is that my issue? If so, do I need to start all the way at the beginning again and generate a new everything, or is this this just one final step I can do right now to resolve everything?