Sorry-- there is no need to register your AdrenaLinn III purchase, despite what is printed on the inside front cover of the printed User Manual. You already have the two-year warranty and unlimited email/phone support.
Since 2017, I've sold AdrenaLinn III only through my online store and not through dealers, so I already have the information I'd ask for in a registration form. Ideally, I should remove that text and reprint new manuals, but I still have many of the manuals with that printing that I'd prefer not to throw out.
Thanks for owning an AdrenaLinn III,