Please add below code in the ecohost-option.php
file afte line number 842 from inc\eco-framework\eco-option folder to get the option in theme option.
array(
'id' => 'eco_whatsapp_link',
'type' => 'text',
'title' => __( 'Whatsapp', 'ecohosting' ),
'subtitle' => __( 'Add Whatsapp URL', 'ecohosting' ),
),
Best Regards,
ThemeLooks Support Team