does the protection plug in lock you out of your site if not set up?

I set up a Mutisite and then installed a ton of your plug-ins, including the "Protection" Plugin (the one that blocks content without a password). I did not set any settings before logging out, and now when I go to my site it sends me to and won't let me access Firefox says the site name could not be resolved and was possibly due to having cookies turned off (which I didn't).
Is this a plug-in seting issue or something completely differnt?