The number of people registered in the session page is higher that the capacity reported for the course. Can I still register? Will I have a place in the session?

You can register while no indication of "session full" is provided. There is no limit to register for a course but only those with a "registered and paid" status have a place booked and secured in the session. When the number of "registered and paid" participants reaches the planned capacity, registration for the session will be closed.