If you’re logging on to the Booking.com extranet from a new device, you’ll be asked to verify your details.
Choose one of the following options:
Phone call: select this option to get a call with a six-digit code Text message: you’ll receive a six-digit code by SMS. Pulse verification code: log in to the Pulse app and retrieve your PIN from the ‘Settings’ page.
These codes will allow to you to log on to the Booking.com extranet again.