WordPress AUTO POPUP for wp engine

function popup_cookie_reset() {
  if(!empty($_GET['reset_cookie'])) { setcookie( 'popup_viewed', 0, time()+86400, COOKIEPATH, COOKIE_DOMAIN ); $_COOKIE['popup_viewed'] = 0; }
}
add_action('wp_loaded','popup_cookie_reset');

function popup_cookie_check() {
  if(!empty($_COOKIE['popup_viewed'])) { 
      $popup_viewed_count = $_COOKIE['popup_viewed'] + 1; setcookie( 'popup_viewed', $popup_viewed_count, time()+86400, COOKIEPATH, COOKIE_DOMAIN );
  }else{
      setcookie( 'popup_viewed', 1, time()+86400, COOKIEPATH, COOKIE_DOMAIN );
  }   
  
    $return['status'] = $_COOKIE['popup_viewed'];
    echo json_encode($return);
    die();  
}
add_action( 'wp_ajax_popup_cookie_check', 'popup_cookie_check' );
add_action( 'wp_ajax_nopriv_popup_cookie_check', 'popup_cookie_check' );

	    <script>
	        jQuery(document).ready(function($) {
				
			    if (window.FormData) {
			        formdata = new FormData();
			        formdata.append("action", "popup_cookie_check"); 
			    }
			     
			    if (formdata) {
			        $.ajax({
			            url: '/wp-admin/admin-ajax.php',
			            type: "POST",
			            data: formdata,
			            processData: false,
			            contentType: false,
			            success: function (res) {
			             
			                response = JSON.parse(res);
			             
			 
			                //alert(response.status);
			                //alert(response.amount);
			                if (response.status < 2) { $('body').addClass('popup_on'); alert('popup_on'); }

			                 
			             
			            }
			        });
			   
	            }	
			});		
	    </script>