This post for support team.
For Ioncube7.1 your add-on has a problem. Please update bellow line on adsabandonedcart.php
if ( ! defined('ADSABAN_CODE') ) define( 'ADSABAN_CODE', 'ion' ); to if ( ! defined('ADSABAN_CODE') ) define( 'ADSABAN_CODE', 'ion71' );