Users on Liferay Customer Portal can perform many tasks, but only administors can invite other team members and activate products. Since you are not an administrator you are either a Requester or a User

• Requesters have access to the Liferay Customer Portal and to the ticketing system.  Within the ticketing system, support requesters have access to create new tickets and comment on existing tickets.
• Users have access to the Liferay Customer Portal and can view issues within the ticketing system.
• For details on role limitations please visit: Learn about Customer Portal Roles