Question about web_visualization (ignition)

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I was able to load Citadel or Fortress on web visualization.

Now, I wanted to test to load from my laptop to my pc. THe web visualization is on PC while I load sdf file on my laptop.

I replaced the ws://localhost:9002 on pc to ws://laptop'sIP:9002

and I load using this steps

It wasn't able to detect my laptop so I decided to try by export IGN_IP=pc's ip and re-do the steps. This persists.

I must have done something wrong or forgot a simple part. Do you know how to do this?