1 Vornbichlhof Answered hi, how can i change the log in adress. actually there is a old, wrong mail adress in it. hi, how can i change the mail adress for log in? B. Janita - Accou… Hi, Please reach out to your local support team for assistance with this. You can find their number under Inbox > Booking.com messages > See contact options then select any option > Other > See all contact options.