Condo board meeting trumped by homeowners' unofficial meeting

Our Florida condominium board recently had a scheduled meeting. It was stated and was documented at the previous meeting there would be an open discussion prior to the next meeting for homeowners to ask questions, etc. The condo board was not pleased at a meeting that was held by a homeowner, and the board stated you had your meeting earlier, so we decided not to have an open meeting and the board president started the board meeting instead. Can they do this? If not, where exactly can I find what to do? Thank You