Ok, I'll try another way.
About user access setting into a plan.
I've set a single group of access level per plan. If I not renew that plan, or delete it, I've seen I remain into that access level group, instead to be eliminated (and stay only in others).
How can I can do it?
(ex. If I pay for GOLD MEMBER plan, the system automatically put my access level into GOLD USER. When my GOLD MEMBER plan finish, my user access level remain into GOLD USER, instead move it into registered user only. How can do it?)