Hello,
1. Go to edit page > [8theme] Layout options > Header text color > White or using custom css code. Unfortunately, I can’t check your site to give you appropriate code.
2. Did you create footer using static block? http://prntscr.com/j4mvqm
https://xstore.helpscoutdocs.com/article/47-static-blocks
https://xstore.helpscoutdocs.com/article/48-widgets-custom-widget-areas
3. Please check and fix it http://prntscr.com/j4mw4e , so I could see your site. Also, provide temporary wp-admin access in the Private Content area.
4. Make sure you set correct settings http://prntscr.com/j4my81
Regards