PHP and WordPresss

I need help with word press blogging platform. I installed plugins and I messed the settings in the template. If you know php that's should be easy. Also I have no access to login page: [login to view URL] Configure owl: [login to view URL] If you could suggest how to improve faster loading. and some minor changes on the forms such as [login to view URL]; There are also problems with plugins, the change the way site looking if they are on. Search engine optimization for the site could be discussed separetly