I haven't been able to type in any posts, searches, naming things, composing letters, etc, but it works when I make a thread or type in other websites. I'm very confused. It won't allow me to click on the spot where you type, but everything else works. What's going on??

I am not quite sure but it sounds like it'd be a device/browser issue.

Make sure that your browser is up to date and that you do not have any addons potentially tampering with our pages.