I have a set of homeplugs (Or powerline adapters to some) that I bought from Ebuyer a few years ago. At that time, I had a Netgear router, I got the adapters, simply plugged 'em in, and hey presto easiest network ever created, worked a treat.
BUT..... poor old Netgear popped it's clogs after about a year or so, I replaced it with a Buffalo Air Station which worked well as a router but instantly scuppered the homeplugs for some reason that I could never fathom, so just gave up on them really. The Buffalo also scuppered my home wireless network too, internet was OK on laptops, phones etc but file/printer access from laptop also went belly up. Never managed to sort that either.
Next BUT..... I've just had my shiny new Virgin SuperHub installed ready for my free £4 extra/mth speed upgrade(We'll see just how super that is, I suppose), so I've removed the Buffalo, re-set everything up for the new router and happy days, wireless file sharing network has reappeared with no settings changed at all on laptop, just the new router. I also have printer working through wireless network too, so all is looking good apart from the poor old homeplugs that are still failing to respond.
I have some software that was an optional install (They worked fine without it) called Power Packet, which showed what speeds were being achieved by each homeplug, but that now shows NO adapters as being visible at all.
I don't think so, they are really extremely simple devices, they look essentially like a power adapter for maybe a phone or some such, no buttons, or reset features I'm afraid, just plug 'em in and away you go...... in theory.
I don't understand what those guys in your link are on about. I leave one homeplug un-connected until such time as I want to have an extra Network point - always works first-time. It is often left unused for weeks at a time. There is nothing to re-set on them!!