You can read comments here: https://chrome.google.com/webstore/detail/meet-mute/dkgoclojlihiolngeagmhkjiglmoeeic?hl=en I found out that in `meetmute.js` you are using `KeyboardEvent` : ``` const keydownEvent = new KeyboardEvent('keydown', { "key": "d", "code": "KeyD", "metaKey": true, "charCode": 100, "keyCode": 100, "which": 100 }) ``` which supposed to be: ``` const keydownEvent = new KeyboardEvent('keydown', { key: "d", keyCode: 68, code: "KeyD", which: 68, shiftKey: false, ctrlKey: true, metaKey: false }); ```  This simple change will make the add on work properly again