It looks like it's the Live Chat "tawk" that is throwing the notice in Chrome. Not sure if you're doing an audio alert or just a window/layer popup, but it's something to check.
To view the notice, just load the site in Chrome, then right-click for Inspect Element. You'll see that in Chrome 69 it now says it's a warning and auto audio would be re-instated in Chrome 70.
In Chrome 68, it was actually throwing an error.
