Here is the description of the Named Organizer (Named Host/Meeting Host) license:
Each individual Named Host has the ability to host a meeting with up to 100 total attendees on the Adobe Hosted platform. Named Hosts may create an unlimited number of meeting rooms, however, the Named Host can only use one of their rooms at any one time and rooms cannot be accessed unless the Named Host is present.
Admins do not have Meeting Host rights. An Admin can create, and modify meetings, but cannot host the meeting. Only a Meeting Host group memeber can host the meeting. Since you entered the room as an Admin only, Connect didn't give you host rights to the room.
This functionality is being more stricly enforced with Connect 9, as it was not progamaically enforced in Connect 8 and earlier.
