Modify footer icons

I’m using the Restful theme and have created a child theme for it. What I’m having trouble with is the restful-social_icons that show up automatically in the footer. I want them there, but I’m unable to modify the Facebook icon to point to my website. When I use “inspect element,” I can make the changes but they don’t take and I’m unable to find out how to save the changes. What am I doing wrong? Haven’t been able to locate anywhere else to make the changes either. I love the theme, but this is the only thing I’ve not been able to figure out.

Any help would be greatly appreciated.