I recently bought the component and I find it very comfortable.
I have a single problem, when a user goes to the registration form if he doesn't select a user group he is registered to both user groups.
When a user load the page, user group "Studenti" is selected but he automatically subscribe in "studenti" and "affittuari.
If the user try to change the selection and register, this is done correctly.
Is there a way to automatically select the working voice?