If you want to leave a team/account where you were invited to, you can reach out to admins of this team and ask them to remove you from the list of team members.
💡 To find out the admin's email go to the Account Settings > Active users.
In case you are no longer in contact with team admins, feel free reach out to us at firstname.lastname@example.org and let us know the name of the team you'd like to leave - we will do it for you manually on our side.
⚠️ If you created boards in that account, their ownership will be automatically transferred to the team admin. Move your boards to your account beforehand to continue working on them.