It's trying to tell you you are either using the wrong password or it doesn't like the type of security you are using. You can start by restarting the router but I have more information on connection problems in a link below in my sig.
Hi Marinda, congratulations on your new Craig tablet and welcome to the forum. I'm moving your thread to the Android Tablet Q&A section for you, where more people are likely to join the discussion and try to help you. Good luck!