I had a working example of my own with the Web SDK using 1.7.2. Just now I tried to use it and it is showing me “Your connection has timed out and you cannot join the meeting. Verify your network connectivity and try again.”.
I know about the new changes coming up like the Security Enhancements & GCM Encryption, so I upgraded the project to the 1.7.7. But that did not work.
So I cloned the Web Sample from here https://github.com/zoom/sample-app-web. And only changed the API KEY and SECRET for the LOCAL example my own credentials and that does not work.
Meeting Number: 8142913318
You can check the picture