With two-factor authentication enabled, logging in requires an additional device, like a phone. In HubSpot's settings, click Security. In Two-factor authentication, click Setup (2FA). Choose the appropriate option if you're using a third-party security app or a text message code to secure your login. You will receive a notification. Click on Continue and then Confirm. Tap Done to finish the setup. You'll receive 10 backup verification codes at the end of the setup.