Your friend opens this address in their browser. Keep the host’s server window open.
Connection help / change address
On the host laptop, open Command Prompt, run ipconfig, and find IPv4 Address under its Wi-Fi adapter.
Create or join a room, then both players press Ready to Fight. The match stays on this Wi-Fi.
Both devices must be allowed to communicate on this network. Guest or school Wi-Fi may block connections between laptops.