If you have received a direct invite to a bid and it is an Invite-only Project, it is only valid for the email address that received it. You cannot access the bid invitation with another email.
If you wish to change the invited email, reach out to the purchasing organization or the contact person for the Project directly, as they have full insight into their invite lists. For more information on how to contact the Project Owner via Euna Procurement, refer to: How do I contact the Project Owner?