How should Client and Server settings be?

I want to use one of the two computers running on the same network as a server and the other as a client. Although I have set the Firewall settings on the computer I want to use as a server, I cannot see the activity on the computer I want to use as a client. I think I am doing something wrong in the client and server configs of the two computers. Can anyone help me with this?

Both computers are running Windows 10.
Both computers have activitywatch-v0.13.2 installed.