joseamirandavelez on "[Plugin: iThemes Security (formerly Better WP Security)] Getting 500 error when click on any link other than home"

For some reason I am getting 500 errors when i click on any link leading to a page, post, etc. The home page (with post lists) works fine, as well as the back end. If I deactivate the plugin everything works correctly. Any idea?

https://wordpress.org/plugins/better-wp-security/