Customer Registration - User Group

-- url of the page with the problem -- : www.telecontrolli.com
-- HikaShop version -- : 2.5.0
-- Joomla version -- : 3.2.3

I would like to give, during the registration process, the customer to a group of users.
I can not define the user taxes: individual, company no VAT, VAT Company.

I activated address_country and address_vat. I created a category with two rules
1 Italy - individual = 22%
2 Italy - company with VAT = 0%
When I try putting the rule only one individual, it does not calculate taxes, with the user FOO
When I try putting all users, the system calculates the VAT, always with the user FOO.
According to me, and I tried it with multiple users, you do not recognize the type of user. There is a support service to see if there is a problem?

as you associate a type of customer to a type of user?
How to register a user in a specific category of User?

Hikashop is a nice system. But the user management is not up to the system.

Hello

The fiscal rule is:
user company = no TAX (I do not rule imposed in Hika)
individual = 22% tax

In the "Tax Detail" You can see "User Type" = "Individual"

User example is individual (no company name - No VAT) resident in Italy.

For the product RR3 should pay VAT of 22%.

But when I make the checkout for the product RR3 Hikashop not calculate VAT. "carrello.png".

If I change in the rules the type of user in "All Customer" as image "Tax Detail2.png", Hikashop calculates tax. Es: "carrello2.png".

You can Check in www.Telecontrolli.com :
www.telecontrolli.com/catalogue.html