I love HOTP. I wish they made it longer and added characters and letters in between. I read they can hack the 2FA app six digits in less than a day. With these add-ons, it would take years.
I surely want to acknowledge my gratitude to this plugin's authors. Their work is to be measured by the effect it has on protecting WP sites and how effortlessly it works. Fricton-free and effective. Just great!
I really hate giving this one-star but the plugin is out of date and broken. This plugin was suggested to me back when I was looking for 2FA methods. It looked promising and worked great, but features are broken, it's fallen behind in supporting the latest versions of WordPress, and has not been updated in half a year. It's a real shame because I've not found a 2FA plugin that can match this plugin...