Why Ecommerce is so difficult to work fine?

I managed to solve ... now I'm trying to understand why I can not register on the site and because the registration form appears on the site of the card? And where do I change this? I do not understand why any customer would not appear in the virtual mart and because it appears the method of payment paypal, since I habilitei the control panel of virtue mart, I have to also enable anywhere else?

Regard
GUILHERME BORGES

If you are talking about eCommerce you probably mean VirtueMart component, as you can see this is not Gavick extension and probably you should redirect your question to VM support.