Sometime overnight, my site www.thinkkidthink.com stopped working properly -- the homepage now displays only a site directory, and any direct link to site content brings up a 404 Not Found error. I still have full access to the dashboard and admin area, and everything looks normal at the surface level there, but from an end user POV the site is just down. Bad timing, too, as I am just ramping up my site's main event for the year.
What could be causing this and how can I fix it? Is it a plug-in issue, theme issue, WP issue, or host issue? Have I been hacked? It's just odd and I have no idea how to solve it.
THANK YOU in advance for any help given. (I'll very happily donate $20 if mods can find a quick solution here.)
-Ed