I did not call you incompetent, I suggest you to hire a competent developer.
I have edited my previous reply, since it upsets you.
As for the following
* WARNING: This file is part of the T4P Core Framework.
* Do not edit the core files.
* Add any modifications necessary under a child theme.
I suggest you to modify the function file, because I think it’s easier for you.
If you want to do the correct way. You can copy the footer.php template into your child theme. In your child theme functions.php, write your own class or function to produce the social icons ( You can copy from the original class, rename it and modify it’s content ), then edit footer.php to call your class or function.
Sorry, that’s all the information I can provide for this issue.