RE: RealFlight G3 Basics - Newbies apply here
What happens when you try to join the others?
There are two problems that I have seen, both seem to be caused by the server not being updated in a timely manner -
One is a "session full" when it shows only 3 of 4 players (there probably is actually 4 players at the time), the other is a failure because a listed session has actually already ended but still appears in the list.
Jim H.