Problem with Pagination for Custom Post Types

I have seen many had problems with pagination for Custom Post Types and most of them have successfully solved their issue. I still have no luck in that.

Here is my problem.

I’m using Custom Post Type UI for creating Custom Post types ( for example one of the post types that I’ve created is articles ).
For listing them I have created Page Template articles.php and the slug that I’m using for that page is article ( for example the page where I have created is listed here http://esotericquotes.com/article/ ).

The first page is listing fine, but when I go to the next page it redirect to the first page and gives the permalink of the second page http://esotericquotes.com/article/page/2/

I’m using Maxx – Responsive Creative WordPress Theme and the code for the pagination for this theme looks like this:

/*Custom Pagination
/*---------------------------------------------------------------------------------------------*/
if ( ! function_exists( 'md_pagi_nav' ) ) :
	function md_pagi_nav(array $query = array()) {
	?>
	<div class="m-pagination">
			<?php
                global $wp_query;

                $big = 999999999; 

                echo paginate_links( array(
                    'base' => str_replace( $big, '%#%', get_pagenum_link( $big ) ),
                    'format' => '?paged=%#%',
                    'current' => max( 1, get_query_var('paged') ),
                    'total' => $wp_query->max_num_pages,
                    'next_text'    => __('Next &rarr;','framework'),
                    'prev_text'    => __('&larr; Prev','framework')
                ) );
            ?>
            <span class="pagination-meta">
                <?php
                    //display Page x of y pages
                    $paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
                    echo 'Page ' . $paged . ' of ' . $wp_query->max_num_pages ;

                ?>
            </span>

        </div>

        <?php
	}
endif;

Can someone with more experience in coding help me how to solve this issue please?