add limited licenses feature to Expert adviser in MT4

I have an expert adviser (EA) for MT4 trading platform, which I am planning to sell on a monthly subscroiption basis. I would like the following feature to be added to this EA: a)? ? ? When a person downloads EA, puts this EA in experts directory of his mt4 platform and starts mt4 plaform, EA looks for its valid license ? from my website b) If the person stops paying, I get the email with the customer's details (name, email address and license code) so that I can stop the license c) Once the license is invalid, the customer cannot use the EA anymore d) I should get the details of all the customers, who download EA with valid and invalid license