Hi gbcox, I am Paulo and I'd like to help.
Do you mean the Read aloud feature? If so, does it work on other websites?
You may first try to delete the site data and see if it helps. To do this, go to Edge Settings > Cookies and site permissions > Manage and delete cookies and site data > See all cookies and site data. Search CNN then click the bin icon to remove and check if the issue is fixed.