My members are PMing stating that they cannot post on any thread or in any category on my forum. I signed in as a regular member and could post. More than one person has already PMed me stating they are not able to post or start new topics.

I asked one person to send me what message they are getting, they sent this:

Sorry, but only Administrators can post topics in this forum.

I checked all my permissions, everything is set properly.

What could I be missing?

Seems to be fixed for now. Didn't do anything though, it's just working now.