For some reason, I'm unable to submit new content - has my account been incorrectly flagged in some way? Tried clearing browser cache, cookies, and trying acros

For some reason, I'm unable to submit new content - has my account been incorrectly flagged in some way? Tried clearing browser cache, cookies, and trying across multiple browsers. I don't want to just sign up for a new account, seems like the wrong way to go about this?!