You can generate your own font files by choosing the icons you need at
https://icomoon.io/app/#/select
and then replace the font files in the css/icon-fonts directory.
With the new font files, you may have to modify some of the icon tags to reflect the new class names in the file framework/shortcodes/social-shortcodes.php file at line numbers 79 to 103. Pls look for tags like these –
If you do not want to mess with PHP file, you can modify the class names in css/icon-fonts.css file instead to match the class names in PHP file.