Cannot join meeting this account does not exist or dont belong to you

I’m using @zoom/videosdk, and i called join method, with random names, and i got the error
cannot join meeting this account does not exist or dont belong to you.
But when i search about docs, on this Username for the "join" method it says username is just display name and don’t have to be my zoom account, why is it like this?

For context, i’m using this repo currently GitHub - zoom/sample-app-videosdk: zoom videosdk web demo

Hi @ahmad.reza ,

If you are running the demo in pureJS-demo directory,
in your /src/js/config/js file, did you fill up these mandatory fields?

  1. sdkKey
  2. sdkSecret
  3. topic

If you are running the other demo in react-demo directory,
in your /src/config/dev.ts, did you fill up these mandatory fields?

  1. sdkKey
  2. sdkSecret
  3. topic
  4. signature

I’m having the same issue as the OP : “This account does not exist or does not belong to you” pops up when loading the ‘react-video-sdk-demo’ .

This is after running the ‘videosdk-sample-signature-node.js’ app locally to set a ‘topic’ and get a ‘signature’ string by feeding in the Zoom Video SDK key and SDK secret from one of my apps.

  1. sdkKey from “Type: SDK” app under “Created Apps” in Zoom Marketplace account
  2. sdkSecret from same location
  3. ‘topic’ as sent to ‘Zoom Video SDK Sample Signature Node.js’ via curl request
    curl -d ‘{ “sessionName”: “The Test”}’ -H “Content-type: application/json” -X POST http://localhost:4000
  4. the signature from the output of the above curl request

What might we be missing ?