The english was perfect and very clear.
With RSVP Pro you can send out invitations to an event (see demo video http://www.jevents.net/jevents-club/demo-videos
) and can save lists of invitees to reuse on a separate occasion.
You can manually send out reminders to invitees who have not responded at any time e.g. 3 days before the event - but this is not automated.
You can setup reminders to go to all the attendees (including the organiser) who can click a link through to the event and see a summary of who is and isn't attending (you can configure what information to display on this page).
The Organiser can click a link against each attendee row to record the 'actual' attendance, as opposed to intention to attend.
So in summary I think most of your needs are covered apart from the automated invitations/invitation reminders - we only support manually triggered invitation messages