What is the difference between the "Landlord," "Delegate," and "Admin" roles?

The "Landlord" is the primary holder of the organization's account and has full access. "Delegates" and the "Admin" role are additional users associated with the same organization who can access the Connected Hub. 

Non-member: the concept of roles and delegates applies only to member organizations. A non-member account is an individual account with no user management.