Hello,

1. open /include/defines.php and change 

$grenada_social_links = array('Fb' => esc_html__('Facebook', 'grenada'),
'Tw' => esc_html__('Twitter', 'grenada'),
'Be' => esc_html__('Behance', 'grenada'),
'Db' => esc_html__('Dribbble', 'grenada'),
'Gp' => esc_html__('Google Plus', 'grenada'),
'In' => esc_html__('Instagram', 'grenada'),
'Ld' => esc_html__('Linkedin', 'grenada'),
'Wa' => esc_html__('WhatsApp', 'grenada'),
'Da' => esc_html__('DeviantArt', 'grenada'),
'Dg' => esc_html__('Digg', 'grenada'),
'Fr' => esc_html__('Flickr', 'grenada'),
'Fq' => esc_html__('Foursquare', 'grenada'),
'Gi' => esc_html__('Git', 'grenada'),
'Pn' => esc_html__('Pinterest', 'grenada'),
'Rd' => esc_html__('Reddit', 'grenada'),
'Sk' => esc_html__('Skype', 'grenada'),
'Sc' => esc_html__('Souncloud', 'grenada'),
'Su' => esc_html__('Stumbleupon', 'grenada'),
'Tb' => esc_html__('Tumblr', 'grenada'),
'Ya' => esc_html__('Yahoo', 'grenada'),
'Ye' => esc_html__('Yelp', 'grenada'),
'Yt' => esc_html__('Youtube', 'grenada'),
'Vm' => esc_html__('Vimeo', 'grenada'),
'Xg' => esc_html__('Xing', 'grenada') );

so that instead of the text will be the fontawesome class for the icon

for example change 'Fb' with 'facebook'

2. open /sections/footer_social_links_section.php

and change line 18 from

$grenada_social_links .= '<li><span class="parallax-wrap"><a class="parallax-element" href="' . esc_url( $social_url ) . '" target="_blank">' . wp_kses_post( $social_name ) . '</a></span></li>';

to

$grenada_social_links .= '<li><span class="parallax-wrap"><a class="parallax-element" href="' . esc_url( $social_url ) . '" target="_blank"><i class="fa fa-' . wp_kses_post( $social_name ) . '"></i></a></span></li>';

Hope it helps

You have to do the step 2 as well, changing just defines.php is not enough.

Hello,

We can do it for you for a fee, but you may find it expensive, so that's why we first explaining where/what to modify so you can do it yourself.