I'm not seeing the comment box below articles, and articles are sometimes split into multiple screens. How can I fix that?

(1) You are probably not signed in to the website. To do that, click on Log in / Sign up at the top right of the screen. (2) Sometimes your browser cache makes it look as though you're logged in when you aren't, so if you're not seeing that link refresh and aren't seeing the comment box below articles, refresh the page with control / command + shift + r.