Read this ⤵️ The demo only works once you've gone through these setup steps. This demo isn't using Origin Trial tokens but relies on local flags instead.
Make sure you're in Chrome, version 86 or later. You can check what version of Chrome you're using by typing chrome://version in the URL bar.
Deactivate ad-blocking extensions on the demo pages. Some ad blocking browser extensions may block some of this demo's functionality.
Don't use an Incognito or Guest profile.
Turn on the flag #enable-experimental-web-platform-features. Go to flags by typing or pasting chrome://flags in Chrome's URL bar.