If you would like to change your team's subdomain go into Admin Settings and use the Team Name & URL form to change your team's account details:
This change will take affect immediately and your teammates will be logged out of web, mac and iOS apps. Make sure you notify your teammates of this change so they can re-log into their apps with the new subdomain.
If the domain you're trying to change to is less than 4 characters or is already taken by another team, then you may experience an error when trying to save.
If you have any trouble don't hesitate to reach out to us.