YES! and another YES after that.
Issue fixed, I have recently but not too recently added a page with a certain plugin with it. after I reset the plugins, I noticed that the page is no longer working properly and that was inside the website... I disabled the plugin and the website page worked but the original problem was still there. after I completely deleted that plugin the admin page worked perfectly and the SEO plugin is now working great and so is the visual composer... that is probably why I didn't notice it at first because I disabled and enabled all the plugins and nothing worked, didn't know I had to completely delete it.
thank you so much for the help James, My problem is now solved!