
Alright, your chrome appears to be up to date but please try to update it to make sure.
Something else you can try is to go to: https://get.webgl.org/ and see if you see the spinning cube.
You can also go to chrome://gpu and please screenshot what you find. (Looking to see if your WebGL is disabled or reduced in some way.)
You can also try toggling hardware acceleration. I've experienced in the past Roll20 not recognizing hardware acceleration was turned on until I toggled it.
-Adam
At this point I suggest filing a report with the Devs via the Help Center. It looks like everything *should* be working, perhaps they can figure out why you are getting the notification.