When your server connects to the On-Air service an access check is performed by the On-Air service to check that the server can be accessed correctly. The On-Air service connects to the port number defined in the server's network pane (this port is usually 50101). If this check fails a warning icon is displayed; the reason why the check fails is most probably a firewall blocking the server's port. If the On-Air service cannot connect then the console will not be able to connect.
Timeout after x seconds
The on-air service did not receive any response at all from your server - either the port is forwarded to a non-existent address or a Firewall is running and has not allowed access to the port.
Port forwarding problems can happen your server's address has changed after a restart, so assign a fixed address in your router's DHCP configuration.
Access to the server port is either blocked by your router (check the port forwarding) or a firewall.
Error 10054 Connection Reset By Peer
This error message is returned when your WAN (internet) access is blocked by the firewall in the Server Manager. If there are any whitelist (allow) entries then your public (WAN) IP must be in the list.
This software uses an internal buffer to ensure the remote data (IQ) is streamed without breaks if your internet connection slows down or is interrupted. When you start the remote radio the buffer will start to fill; when it reaches the buffering level (usually 100ms) the radio starts displaying the data in the waterfall and audio will be heard. If the buffer becomes empty due to an interruption in the network the above logic is applied again - it is preferable to have fewer breaks like this. The suggested value is 100ms - only if you are suffering from a very erratic network connection should you need to increase this value.