I thuink you should re-register the device which resets all the memory and allows you to not be in demo mode:
-----
Turn the unit off. Then press and hold the page back button (bottom one) and while holding it turn the device on.
After the bookshelf gets rearranged, tap the top left menu (ebook guy) and then tap the Info icon. Tap the more icon (twice) and you should see the hidden menu. There is a refurbish icon that will wipe out any existing registration info. Do so now.
Afterwards, just power off and then power on again. Now under the Info icon you should see "Not registered yet" for User ID.
Now connect to your Online Bookshelf with your (new) ebookwise User ID.
-----
|