The .tooltip in AI1C is conflicting with the .tooltip in Starrtica Theme. Essentially, the CSS proprieties are overriding my theme's CSS and causing the header's social icons to disappear. I resolved the problem by changing the .tooltip in the theme to another name and modificying the CSS in the child theme.
However, since I am self-taught and not a professional web designer I anticipate further complications from this problem and would like some professional advice as to how I might resolve this conflict permanently. A solution that withstands an update from either the plugin or the theme designers would be ideal.