"Ghost" user/bot signed up after Ultimate Facebook installation, sending unwanted notifica

Product: Ultimate Facebook

After I installed the plugin, a "ghost" user/bot signed up on my website. The "user" have no name, and I can't find it in my users list. It's sending high-five salutes to every one of my users, and I can't stop it.

Here's an example of an email notificacion that got from a high-five:

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sent you a high-five! Why not send one back?

To see 's profile: http://gameshock.vg/members//profile

To send a high five: http://gameshock.vg/members//example/screen-one
---

I'm using the last version of Wordpress and BuddyPress, and I contacted BP developers too to see if they can help me too.

Thanks for everything!