Working on a demo website at https://mto2staging.mustangtraderonline.com and the theme has custom settings for social media links. I filled in a few of them but the icons don't show up as you can see in the header. When i try to 'inspect' the elements, i can't see what files are used for the icons or where they should be stored. What am i missing?
They're fontawesome styles - you'll be missing the css file from your header. https://fontawesome.com/icons/twitter?style=brands