Hello
The logs you provided suggests there is something wrong with the IP address or port you are trying to connect to.
When you say “There are 2 IPs listed” do you mean the addresses provided by the player application from “My machines” view?
Since you are using vpn there is always a possibility that NoMachine did not list every network interface and the valid IP is simply not there. Could you ascertain which IP is proper for the target machine and use the “add new connection” in the player application to provide the valid address?
If the connection still does not work like that, please check if there is nothing blocking the 4000 port on the target machine. You can also try to change the protocol used during the connection from the NX to SSH (from connection details menu) this will also change port used to connect to
22 (if you are connecting to linux/osx) or 4022 (for connections to Windows).
Also on the target machine please check if the nxd process is running and also for any errors/warnings in the NoMachine logs. Most likely place would be nxd.log and nxserver.log.
/Mth