Regarding the space to the right, we have previously send you a css code to fix it. Please see this other topic of yours: https://support.codeless.co/?topic=favicon-responsive-menu-e-responsive-mode
Did you made these changes?
If not, please do these first. Else let us know so we can give it another look.
You have an old version of visual composer and theme. Update them to the latest version, the issues may be due to this. Anyway, you can add this code to center the alignment of the text on homepage:
