Rafael Fischmann on "[Plugin: iThemes Security (formerly Better WP Security)] WordPress Table 'site.wp_itsec_lockouts' doesn't exist"

So I've decided to solve this issue by myself and I think it worked.

I've found the three "CREATE TABLE" commands inside the /core/class-itsec-lib.php file, connected to my database using Sequel Pro and ran the commands manually.

The issue actually lied on $charset_collate, which I had to set manually to latin1.