Cannot open a socket connection using URscript

i can communicate with the controller via tcp/ip using the port 29999 to monitor the state of the robot, but when i try to connect as a server to receive a string to execute the next step the connection never stablish, i was able to communicate before, but we delete the program stored in the controller and we create a new one, is there something that i need to configurate (polyscope) to open the socket using URscript?

i tried with several ports, before could be establish a connection using the port 3000 but now it doesn’t work.

Is your external server running windows by any chance? The firewall could be blocking the connection coming from the robot client on port 3000.