Remove some k2 things

Hallo i have a site under construction and i want to disable coomments for visitors ,the comment othe authpor, the image on the bottom and on top.I deleted the default user admin and an error is show on the top of the page. see here please
http://www.queenolive.gr/index.php/comp ... fted-olive

Also i renamed the latest project module and site crashed, i enter the old name again but site remains crashed www.queenolive.gr

News Show Pro GK4 is the module,only if i disable it site comes back online, but i want to use it

Solved the problem with News Show Pro GK4 module, please help me with my first issues