How are you guys? We have several days with this problem. It is very annoying since we do not know who is inside the server, we do not see what times we are running against, etc. The problem is that we do not see any driver on the list, but it is something that does not always happen, sometimes it is seen but for a short period of time.
Here is my solution: check your "multiplayer.json" on your Dedi for: "Unique Vehicle Check":false, The entry must be "false"
