You are reading the documentation for an older Pickit release (2.4). Documentation for the latest release (3.3) can be found here.
Which browser can I use to access the Pickit web interface?
Troubleshooting: Google Chrome
If you’re using Google Chrome and the 3D views don’t work out-of-the-box, check your GPU state by going to the following link: chrome://gpu. If it doesn’t read “WebGL: Hardware accelerated” in the first list, this confirms that the 3D views won’t work. To resolve this issue, you have to:
Make sure chrome://flags/#disable-webgl is disabled (there should be a link “Enable”)
If that does not help, try to additionally enable chrome://flags/#ignore-gpu-blacklist.
To confirm that this fixes the problem, go to the page https://get.webgl.org/ and make sure you see the spinning cube. If that’s not the case, use a different PC or laptop (with a preferably stronger graphics card) to access the web interface in order to see the 3D views.