HTTP Request node not receiving startTime and endTime from GoHighLevel appointment fetch

Describe the problem/error/question

I am utilizing callin.io to retrieve appointment details from GoHighLevel after a contact books an appointment through a calendar form. The process is generally successful, as contact information, tags, and responses are all coming through. However, I am not receiving the actual appointment time (startTime, endTime) in the HTTP Request response. This is currently preventing a voice call reminder from being sent via callin.io, as it requires the precise appointment time.

What is the error message (if any)?

There are no errors reported. The request completes successfully, but the appointments array is consistently empty.

Share the output returned by the last node

{
  "appointments": []
}

Expected at least one item with:

{
  "startTime": "...",
  "endTime": "...",
  ...
}