WP-Defender update from Hub took site down!

Since the great news yesterday that we can update plugins etc. with the hub….tried updating WP-Defender and it took the site down. Had to FTP in and rename the plugin….then deleted the defender plugin folder and tried to reinstall defender….took the site down again….going renamed the defender plugin folder to wp-defender1111 but thinking I should just delete it. Really want to get Defender back working on this site. Please advise

Got these two errors:

Fatal error: Call to undefined method DateTime::diff() in /home/content/80/9282280/html/wp-content/plugins/wp-defender/app/module/audit-log-module/component/class-wd-audit-api.php on line 54

Warning: include(/home/content/80/9282280/html/wp-content/plugins/wp-defender/app/component/class-wd-dir-tree.php) [function.include]: failed to open stream: No such file or directory in /home/content/80/9282280/html/wp-content/plugins/wp-defender111/app/class-wd-utils.php on line 97

Warning: include() [function.include]: Failed opening ‘/home/content/80/9282280/html/wp-content/plugins/wp-defender/app/component/class-wd-dir-tree.php’ for inclusion (include_path=’.:disappointed:usr/local/php5/lib/php’:wink: in /home/content/80/9282280/html/wp-content/plugins/wp-defender111/app/class-wd-utils.php on line 97

Fatal error: Call to undefined method DateTime::diff() in /home/content/80/9282280/html/wp-content/plugins/wp-defender111/app/module/audit-log-module/component/class-wd-audit-api.php on line 54