Is "Add Meeting Registrant" API available for free Zoom accounts with Server-to-Server OAuth? Hi Zoom Community,I want to confirm whether the Add Meeting Registrant API endpoint is accessible on a free Zoom account or if it requires a paid plan.My current setup:Free Zoom account Server-to-Server OAuth app created under this free account Node.js backend calling the Zoom API Scopes configured: meeting:write:meeting:admin and meeting:write:registrant:adminWhat is already working:I am successfully creating scheduled meetings using: POST https://api-us.zoom.us/v2/users/me/meetingsThis returns 201 Created with a valid meeting_id, start_url and join_url. Token generation and authentication are working correctly.What I want to confirm:When I call the Add Registrant endpoint: POST https://api-us.zoom.us/v2/meetings/{meetingId}/registrantsWith body: json{ "email": "test@example.com", "first_name": "Test"}Will this work on a free account, or will it return: json{ "code": 200, "message": "Only available for paid users."}Why I need registrants:My use case is to create private, secur