User registration doesn't work after update 2.2.3

-- url of the page with the problem -- : mywebsite.com/mypage
-- HikaShop version -- : 2.2.3
-- Joomla version -- : 2.5.16
-- PHP version -- : 5.3
www.airsoft-romania.com
Hi,

In this weekend I update hikashop from 2.2.2 version to 2.2.3. After update everything was good...but...I noticed that was a few clients that they trying to register to my website, but there account was not activated.
I tried to register myself with a new customer account, I introduced all required details and when I push "register" button, my website show me the home page (not the confirmation that I was registered). The account was created but is inactive and no email was sent to customer. I didn't modified anything in user option after update.
I hope you can help me, because since today I tough that the problem is Artio joomshef module (I uninstalled meanwhile). The problem persist even when I disabled from Global Configuration - Use URL rewrite and Search Engine Friendly.

Regards,.

Hi,

On my home computer and my office computer, I cannot register a new user, the confirmation is not dispalyed and the email with user and password is not sent. I'll give a try from my tablet pc.

10x and regards,
Raul