Shortcodes and widgets of dwqa pro

Hello. I would like to edit dwqa sidebar widgets to show popular questions and unanswered questions with questioner author names. What is the shortcode of it or which file should it edit?
I saw a code in Popular_Question.php 

if ( $questions->have_posts() ) {
echo '<div class="dwqa-popular-questions">';
echo '<ul>';
while ( $questions->have_posts() ) { $questions->the_post();
echo '<li><a href="'.get_permalink().'" class="question-title">'.get_the_title().'</a>';
if(!$instance['hide_user']){
echo __( ' asked by', 'dwqa' ).' '.get_the_author_posts_link();
}
if(!$instance['hide_date']){
echo ', ' . sprintf( esc_html__( '%s ago', 'dwqa' ), human_time_diff( get_post_time('U', true) ) );
}
echo '</li>';
} 
echo '</ul>';
echo '</div>';
}

I want to link that “.get_the_author_posts_link() ” to DWQA author page too