Problem?

 
Hello everyone
I have a question
Let say I have made an expertadvisor that I am renting to clients for a monthly subscription fee.
Is there a way I can restrict the clients from selling the trades taken by ea, via a copy trade system?
I am allowing only one account per license for a month, but it's possible that clients buy one month license and then use a copy trade and sell the signals to other people
Is there a way to counter that?
 
I think it's impossible to control that.Best regards.