Hello,
Thanks for using our theme.
Go to edit page > change color https://prnt.sc/vm9372 and [8theme] Layout options > Custom background image for the Home page
Theme Options > Header builder > Multiple headers > edit header for the Home page. For example – http://prntscr.com/tn1ar9 + https://youtu.be/BpeXfzNwkOc
Enable WPBakery for static blocks https://prnt.sc/vm94vj then edit the Footer static block https://prnt.sc/vm95g0
Regards