If this Greenlight listing refers to the BigBlueButton front end, test a class from invitation to recording access. Create a room, have a teacher start it, and let learners join from different devices. Check roles, waiting-room or access settings, and what participants can see after the session.
The front end cannot compensate for an underpowered conferencing server. Include a realistic class size and network conditions, then confirm how room data and recordings are retained or removed. Compare the complete classroom experience, not just the landing page.
Akousa