OK. I know what happened because I deal with this, too. If you log in and then do NOT Log out properly when leaving, you continue to be logged into the board where you last were before closing your browser. If you go back to THAT board (say CE), you are logged in and can then navigate normally. If you try to enter through a different board, say GeekSpeak, you have to log in and provide your password.

I suggest you very carefully log out of the board you're on and then click on any other tabs open from HZ and log out of those, too. Then reopen HZ and see if the problem hasn't gone away.