Hi,
I asked how I can use it, how I can assign these plugins
Sorry but I not understand,
this is a profiler component that extends Joomla user management, so you can create custom fields and these fields are shown on Joomla registration/edit profile form.
You told me "I do not know how to add a registration page", the registration form is the same of Joomla, so, you can create a menu item for registration (with usual way) or from a link from standard login module.
still, the question "I do not know how to add fields", you can access to Easy Profile backend as all Joomla components. You will shown a field list and button to add fields (see screenshot). This is the same interface of Joomla articles.
I have the impression that you really know what you've bought. you asked me a refund, but, know what you are buying is a
duty and right by the consumer, so why you have not tried the free version or contacted our forum to request a demo or more infos (Presales Questions) before buying?