https://setup.rbxcdn.com/version-5a54208fe8e24e87-RobloxApp.zip
https://archive.org/download/20152021RCC/0.463.24788Bootstrapper.exe
You may put IP's and ports for servers to join here, if you are looking for players. NOTE: The ip and port for other players to join your server is different from the ip and port you use to join your own server.