Interesting. My Avast looks just like your first screenshot with the only option to Uninstall the component.

But I didn’t find anything that looks like your second screenshot. So I looked at Extensions and Plug-ins/Add-ons in my browser: up to date Firefox. Nothing found relating to Avast.

So I fired up IE, which I never use except in cases like this. No Check Marks, but IE does have the little AOS icon in the upper right hand corner. And AOS is listed in IE’s Add-on section.

Thinking out loud: is AOS a JAVA app? Firefox won’t run JAVA apps but IE will… That doesn’t make sense as my wife computer has the little icon in the upper right. I’m clueless.
.