articles not working

Well, I am not very sure how you have enabled this “Articles” tab for store pages.

But this code is different for all themes. As you are using “My Listing” theme so your code will be this –

add_action( 'wcfmmp_before_store_article', function( $store_id, $store_info ) {
	echo '<section class="i-section archive-posts">
		<div class="articles-container">';
}, 50, 2);

add_action( 'wcfmmp_after_store_article_loop_start', function( $store_id, $store_info ) {
	echo '<div class="row section-body grid">';
}, 50, 2);

add_action( 'wcfmmp_store_article_template', function() {
	c27()->get_partial( 'post-preview', [
							'wrap_in' => 'col-md-4 col-sm-6 col-xs-12 ' . ( is_sticky() ? ' sticky ' : '' ),
						] );
});

add_action( 'wcfmmp_store_article_template_none', function() {
	?>
	<div class="row text-center">
		<div>
			<i class="no-results-icon material-icons">mood_bad</i>
			<p><?php _e( 'No results. Try another search?', 'my-listing' ) ?></p>
		</div>
	</div>
	<?php
});

add_action( 'wcfmmp_before_store_article_loop_end', function( $store_id, $store_info ) {
	global $wp_query;
	?>
	<div class="blog-footer">
		<div class="row project-changer">
			<div class="text-center">
				<?php echo paginate_links([
					'total'   => $wp_query->max_num_pages,
					'format'  => '?paged=%#%',
					'current' => 0,
					'current' => get_query_var('paged') ?: 1,
					]) ?>
			</div>
		</div>
	</div>
	<?php
}, 50, 2);

add_action( 'wcfmmp_before_store_article_loop_end', function( $store_id, $store_info ) {
	echo '</div>';
}, 50, 2);

add_action( 'wcfmmp_after_store_article', function( $store_id, $store_info ) {
	echo '</div></section>';
}, 50, 2);

add_filter( 'wcfm_is_allow_store_articles', '__return_true' );