XML-RPC Broken after update plugin WP Better Security

Hi, i have been posting posts for my website using my iPad. recently i update my plugins, a few plugin and then suddenly my website is broken. i suspected it was Better WP Security so i change the plugin folder and then my website start working back. I then reinstall Better WP Security, which was changed to iThemes Security. install was ok but then i notice my XML-RPC is broken because i cannot post anything or login from my iPad. It says my website is not XML-RPC enabled. i am using WP 3.8.1. There is no option to enable it under WP as i read it was enable by default. I checked iThemes Security, i disabled the XML-RPC and re-enable it but still not working. I even disabled iThemes Security plugin. None is working. I tried using phpmyadin and find the particular information in the option table but there is none. please help.