AJAX Load More Plugin Loads Posts That are Already Shown – SEO

I am working on a site with a page that has multiple sections, each section has multiple loops featuring multiple categories. I use Ajax Load More plugin to load new posts for each sections. The issue is when I click on Load More, it loads both the posts already shown and the one that hasn’t been shown. I want it to load only new posts not already shown.

Here is the shortcode I used:

echo do_shortcode('[ajax_load_more container_type="div" post_type="post" posts_per_page="3" preloaded="true" preloaded_amount="4" pause="true" scroll="false" button_loading_label="Loading..." seo="true" category="church-music-news"]');

Here is the loop on on of the sections

<div class="row">

                <div class="col-lg-12 col-sm-12">
                    <div class="music_box bg-color1">
                        <div class="music_box_top">

                            <?php
                            $sticky = get_option( 'sticky_posts' );
                            rsort( $sticky );

                            $args = array(
                                'post__in' => $sticky,
                                'posts_per_page' => 1,
                                'cat' => 34
                                );

                            $sticky_query = new WP_Query( $args );

                            while ( $sticky_query->have_posts() ) : $sticky_query->the_post(); 
                            ?>
                            <a href="<?php the_permalink(); ?>">
                                <div class="fashion_box_thumb">
                                    <?php
                                    if ( has_post_thumbnail() ) {
                                        the_post_thumbnail( 'full', array() );
                                    }
                                    ?>
                                </div>
                            </a>

                            <div class="fashion_box_text">
                                <a href="<?php the_permalink(); ?>">
                                    <h3><?php the_title(); ?></h3>
                                </a>
                                <p><?php the_excerpt(); ?></p>

                                <div class="post_cont_icons">
                                    <span class="fa fa-comments cmnt"> <?php comments_number('0','1','%'); ?></span>
                                    &nbsp; &nbsp;           
                                    <?php echo getPostLikeLink(get_the_ID());?>

                                    <span class="matchtime2"><i class="fa fa-clock-o"></i> <?php the_time();?><br></span>
                                </div>

                            </div>


                            <?php endwhile; ?>
                            <?php wp_reset_postdata(); ?>

                            <div class="clear"></div>

                        </div><!--music_box_top-->

                        <div class="fashion_box_bottom">

                            <?php
                            $args = array(
                                'post__not_in' => get_option( 'sticky_posts' ),
                                'posts_per_page' => 4,
                                'cat' => 34
                                );

                            $sticky_query = new WP_Query( $args );

                            $count = 0;

                            while ( $sticky_query->have_posts() ) : $sticky_query->the_post(); ?>
                                <?php $count++; ?>
                                <?php if ($count == 1) : 
                            ?>

                            <div class="fashion_box_bottom_item">
                                <a href="<?php the_permalink(); ?>">
                                    <h4><?php the_title(); ?></h4>
                                </a>
                            </div>

                            <?php elseif ($count == 2) : ?>
                            <div class="fashion_box_bottom_item">
                                <a href="<?php the_permalink(); ?>">
                                    <h4><?php the_title(); ?></h4>
                                </a>
                            </div>

                            <?php elseif ($count == 3) : ?>
                            <div class="fashion_box_bottom_item">
                                <a href="<?php the_permalink(); ?>">
                                    <h4><?php the_title(); ?></h4>
                                </a>
                            </div>

                            <?php elseif ($count == 4) : ?>
                            <div class="fashion_box_bottom_item">
                                <a href="<?php the_permalink(); ?>">
                                    <h4><?php the_title(); ?></h4>
                                </a>
                            </div>                        

                            <div class="clear"></div>

                        </div><!--music_box_bottom-->
                    </div><!--music_box-->
                </div><!--col-lg-12-->

                <?php else :
                get_template_part( 'woodclefpro/pro_template3' );

                endif;
                endwhile;
                wp_reset_postdata(); ?>

            </div><!--row-->
            <div class="row">
            <?php 

                echo do_shortcode('[ajax_load_more container_type="div" post_type="post" posts_per_page="3" preloaded="true" preloaded_amount="4" pause="true" scroll="false" button_loading_label="Loading..." seo="true" category="church-music-news"]');
            ?>
            </div>