To change the login information, the original owner of the account can go to this link: https://donorbox.org/org/update_login. You will find a form allowing you to change the email address and password that you signed up with.
For future reference, you can invite more members to your team here: https://donorbox.org/org/org_users/new.
If you are unable to reach the original owner account, please let us know and provide an email for us so that we can change the account ownership. Your email must be an organization email such as firstname.lastname@example.org. For security purposes, common emails such as gmail or hotmail will not be accepted.