Hi! Please check if you’re using the new Home page. If you are, try switching to the old one using the gear icon in the top-right corner. After switching, click the gear icon again and you should see the Feedback option.
You can also check that your browser isn’t zoomed in, as that can make it look like there’s no text box, sometimes, you just need to scroll or move slightly to the side. If this doesn’t help, try opening the site in a private/incognito window to rule out any cache or extension issues.