Few queries for the plugin

There are certain things which I need to know before making a purchase.

1. The Subscribers are added to WP user database or Memberpress has a separate database which can be accessed within the plugin.
2. User have to login to WP first and then subscribe or can directly subscribe on subscription page
3. Is your tool integrates with GetResponse?
4. Can we edit the subscription form?
5. As your plugin supports zapier, will it supports auto renewal and periodic billing?
6. Does your tool authorize search engines to view and index the restricted content?
7 Can we set trial pages for users before they subscribe for seeing restricted content?

The page I need help with: [log in to see the link]