Fatal Error during activation attempt

Please assist as I just purchased the pro version & will need an immediate refund if it isn’t going to work with my wordpress version 4.3.1

Warning: include_once(/var/www/vhosts/westparkcom.net/httpdocs/wp-content/plugins/cm-pop-up-banners//licensing_api.php): failed to open stream: No such file or directory in /var/www/vhosts/westparkcom.net/httpdocs/wp-content/plugins/cm-pop-up-banners-for-wordpress-pro/cm-pop-up-banners-for-wordpress-pro.php on line 62 Warning: include_once(): Failed opening ‘/var/www/vhosts/westparkcom.net/httpdocs/wp-content/plugins/cm-pop-up-banners//licensing_api.php’ for inclusion (include_path=’.:/opt/plesk/php/5.3/share/pear’) in /var/www/vhosts/westparkcom.net/httpdocs/wp-content/plugins/cm-pop-up-banners-for-wordpress-pro/cm-pop-up-banners-for-wordpress-pro.php on line 62 Warning: include_once(/var/www/vhosts/westparkcom.net/httpdocs/wp-content/plugins/cm-pop-up-banners//shared/cm-pop-up-banners-for-wordpress-pro-shared.php): failed to open stream: No such file or directory in /var/www/vhosts/westparkcom.net/httpdocs/wp-content/plugins/cm-pop-up-banners-for-wordpress-pro/cm-pop-up-banners-for-wordpress-pro.php on line 65 Warning: include_once(): Failed opening ‘/var/www/vhosts/westparkcom.net/httpdocs/wp-content/plugins/cm-pop-up-banners//shared/cm-pop-up-banners-for-wordpress-pro-shared.php’ for inclusion (include_path=’.:/opt/plesk/php/5.3/share/pear’) in /var/www/vhosts/westparkcom.net/httpdocs/wp-content/plugins/cm-pop-up-banners-for-wordpress-pro/cm-pop-up-banners-for-wordpress-pro.php on line 65 Fatal error: Class ‘CMPOPFLY_Cminds_Licensing_API’ not found in /var/www/vhosts/westparkcom.net/httpdocs/wp-content/plugins/cm-pop-up-banners-for-wordpress-pro/cm-pop-up-banners-for-wordpress-pro.php on line 68

https://wordpress.org/plugins/cm-pop-up-banners/