Don’t know why this happens, but whenever I go to fly online, the box that says where all the controllers and other pilots are only says loading. It will not display information except for a blank loading screen. Despite this, all the other buttons such as aircraft, time, and region, still continue to work.
Known issue for the last 24-36 hours. You can still fly. Utilize Live Flight Tracker to see where everyone is to enhance your experience if you don’t want to fly alone 😉
The staff at FDS is aware as well.