Just a quick heads-up for other WordPress admin types who installed the Duo plugin years ago and kind of forgot about it… apparently it’s been deprecated in favor of a new plugin which supports the new “universal prompt” system. It’s not hard to upgrade (deactivate old, install new, activate new, enter the same token/passkey/hostname as you did before into new, authenticate, delete the old once you’ve confirmed new works) but I wish there’d been a bit more communication about this.

Also be aware that Universal Prompt defaults to an immediate push notification rather than giving you a button to click to initiate a push. Other than that, it’s basically the same, and works just fine. Hooray for security.