All pages show the same posts

Please somebody can help me i’m getting crazy

this is the website https://www.galanginternational.com/

i just copied the pagenavi code inside “display posts shortcode ” plug in .php

and it show in the other pages the same posts!!
code:

// Create the shortcode
add_shortcode( 'display-posts', 'be_display_posts_shortcode' );
function be_display_posts_shortcode( $atts ) {

	// Original Attributes, for filters
	$original_atts = $atts;

	// Pull in shortcode attributes and set defaults
	$atts = shortcode_atts( array(
		'author'          => '',
		'category'        => '',
		'date_format'     => '(n/j/Y)',
		'id'              => false,
		'image_size'      => false,
		'include_content' => false,
		'include_date'    => false,
		'include_excerpt' => false,
		'offset'          => 0,
		'order'           => 'DESC',
		'orderby'         => 'date',
		'post_parent'     => false,
		'post_status'     => 'publish',
		'post_type'       => 'post',
		'posts_per_page'  => '10',
		'tag'             => '',
		'tax_operator'    => 'IN',
		'tax_term'        => false,
		'taxonomy'        => false,
		'wrapper'         => 'ul',
	), $atts );

	$author = sanitize_text_field( $atts['author'] );
	$category = sanitize_text_field( $atts['category'] );
	$date_format = sanitize_text_field( $atts['date_format'] );
	$id = $atts['id']; // Sanitized later as an array of integers
	$image_size = sanitize_key( $atts['image_size'] );
	$include_content = (bool)$atts['include_content'];
	$include_date = (bool)$atts['include_date'];
	$include_excerpt = (bool)$atts['include_excerpt'];
	$offset = intval( $atts['offset'] );
	$order = sanitize_key( $atts['order'] );
	$orderby = sanitize_key( $atts['orderby'] );
	$post_parent = $atts['post_parent']; // Validated later, after check for 'current'
	$post_status = $atts['post_status']; // Validated later as one of a few values
	$post_type = sanitize_text_field( $atts['post_type'] );
	$posts_per_page = intval( $atts['posts_per_page'] );
	$tag = sanitize_text_field( $atts['tag'] );
	$tax_operator = $atts['tax_operator']; // Validated later as one of a few values
	$tax_term = sanitize_text_field( $atts['tax_term'] );
	$taxonomy = sanitize_key( $atts['taxonomy'] );
	$wrapper = sanitize_text_field( $atts['wrapper'] );

// Set up initial query for post
	$args = array(
		'category_name'  => $category,
		'order'          => $order,
		'orderby'        => $orderby,
		'post_type'      => explode( ',', $post_type ),
		'posts_per_page' => $posts_per_page,
		'tag'            => $tag,
                'paged'          => $mypage

	);

https://www.ads-software.com/extend/plugins/wp-pagenavi/