API - Create meeting error

Hello,

Product: GotoMeeting

Problem Description: I have some problems with this API endpoint (https://developer.goto.com/GoToMeetingV1/#operation/createMeeting). I've got a very weird error even though my request body is correct.

API Method: Post Method

Request URL: https://developer.goto.com/GoToMeetingV1/#operation/createMeeting

Request Headers: 

• Content-Type: application/json
• Accept: application/json

Response HTTP Code: 412

Response body: 

{
    "subject": "Meeting Madness",
    "starttime": "2020-09-11T12:00:00Z",
    "endtime": "2019-09-1T13:00:00Z",
    "passwordrequired": false,
    "conferencecallinfo": "hybrid",
    "timezonekey": "89",
    "meetingtype": "scheduled"
}

Email that has being used to create the access token: growknee60@gmail.com

Thank you so much!