Unfortunately, you cannot change the email address you use for BlackDoors at the moment.
If you wish to use another email for BlackDoors booking, please click Logout under your avatar icon (top right corner of the page).
You can then sign up again with the email you desire.
Your email address can only be associated with one BlackDoors by Dashare account at a time. If you get a notification that your email address is already in use but you can't remember your password for that account, you can reset your password.