Hi there,
I developed a plugin for wordpress and submitted it on codecanyon. Its live now but there is a problem. The problem is that i want to put license system in it. Like
1) if anybody buy my plugin then he or she must have to put license in it before using it properly.
2) Plugin license must be per domain system. Like if anybody buy it then he can not use it for more than one domain.
Right now if you buy my plugin then you can use it multiple time for any number of domain.
How can i change it? how to add purchasing code verification system?