Maintenance

Hello! I recently launched my site and it’s working fine.
But when I tried to Share a product on facebook, clicking on the Share button using a plug-in from here, the window shows The Image of the product, The Title and and a short description, something like “This long text will keep customers busy reading it” but in others it shows the real description. How to fix it? or is it that the description is too big for the box?.
Also, when I tried to share my site through Facebook chat box… I type on it http://www.sparenhouse.com and after 3 seconds a little window pops up in the chat box but it says http://www.sparenhouse.com >> Maintenance Mode, and it’s not in maintenance mode, what’s going on? Help pls!