Human Verification not showing up in registration form

[SnakeEaterITA]

Hello everyone,

I have a problem with my forum. I couldn't understand why it got attacked by so many bots, but I just found out in the registration form no Human Verification modules appear (despite them being selected in the admincp)

I tried with

-Q/A
-reCaptcha
-new reCaptcha

I also tried using a new empty style. No luck with that.
I tried disabling plugins. No luck with that.

I'm running 4.2.2 Patch 4

Any idea what it could be?

Thanks!

--------------- Added 1448970202 at 1448970202 ---------------

Ok, I hope this helps, I found the solution:

http://www.vbulletin.com/forum/forum/vbulletin-4/vbulletin-4-questions-problems-and-troubleshooting/394856-human-verification-stopped-working-after-uprage-to-4-1-5?highlight=human+verification

After upgrading, the Unregistered Users were not set to have the Human Verification on.

Admin CP -> Usergroups -> Usergroup Manager -> Edit Usergroup (Unregistered) -> Require Human Verification on Configured Actions -> Yes