Anyway, consider this your reminder: DMCA agent re-registration is now a thing.
Update: The CO assures me that this password requirement came from the Library of Congress, not from the CO itself. That's useful information and I apologize for directing my ire so directly at the Office, though I have to say I'm still not thrilled about the requirement to re-up every three years, which is exactly the kind of formality that we got rid of elsewhere in copyright because it rewards the strategic exploitation of screw-ups. Since we've already seen copyright trolling around sites without perfect DMCA compliance, this database seems like an invitation for trouble.
So, kudos again for removing the fax requirement! But the Office never explained why renewal was so important for DMCA agents. The concern for updated information could be satisfied by, say, an email every three years suggesting that people check to make sure the information is accurate, and if it was no action need be taken. That's how my domain name maintenance notices work. I'm pretty sure that every site with an agent designation would be willing to pay $60 at the outset instead of $6 for more certainty that screwing up a calendar, or having an outdated credit card on file, wouldn't itself destroy DMCA protection.