Social Share – Question Answer Plugin

there is an action hook for social buttons, you can remove first existing

remove_action( 'qa_action_single_question_main', 'qa_action_single_question_social_share_function', 0 );

then add your own function to the hook

add_action( 'qa_action_single_question_main', 'qa_action_single_question_social_share_function_custom', 0 );
function qa_action_single_question_social_share_function_custom(){

echo 'your HTML here';

}