I can't post on the "Story and Art" board

I tried yesterday and now, I didn't work, as soon as I click on "post discussion" I get logged out and then I get on the main board page and my post is not posted. What is the reason for that?

EDIT: I can post on this board and on the Report a Bug board, yesterday I wanted to make this post regarding my problem on the Report a Bug board, but it got deleted because that was the wrong board, and now I'm posting it here. I don't know if any other boards are affected as I didn't try that out, but the Story and Art board is affected for sure.