Navigate to the login page to the new backoffice by clicking on the button in the top right corner or by clicking on this link.

Once on the page of backoffice, click on "forgot your password?" to start the wizard.  

Enter the email of your account to which you want to reset the password and click confirm.

A few minutes after the confirmation of the application, you will receive an e-mail. After it opens, click on the button "reset password" to continue the procedure.

Once you have clicked the button, proceed to type a new password in the appropriate fields.

Done! Backs now login with the mail address of your account and the password you just reset.