Questions About Analytics Reports

Hi everyone, nice to meet you!

I have two questions regarding analytics reports:

1 Metrics showing 0:
When I request a report with:

metric_names = ["num_messages_sent", "num_messages_received"]
start_dt = datetime(2025, 8, 10, 0, 0, 0)
end_dt = datetime(2026, 3, 1, 0, 0, 0)
account_id = [account_id]

I get:

'metrics': [
  {'id': 'num_messages_sent', 'type': 'number', 'value': 0},
  {'id': 'num_messages_received', 'type': 'number', 'value': 0}
]

However, when I manually check the contacts and conversations for this account, there are messages sent in that interval. I don’t understand why the report shows 0. Here is my code if it helps:

metric_names = ["num_messages_sent", "num_messages_received"]
start_dt = datetime(2025, 8, 10, 0, 0, 0)
end_dt = datetime(2026, 3, 1, 0, 0, 0)
account_ids=['acc_xxxxx']
start_ts = int(start_dt.timestamp())
end_ts = int(end_dt.timestamp())

body = {
        "start": int(start_ts),
        "end": int(end_ts),
        "timezone": "UTC",
        "filters": {
            "account_ids": account_ids,
        },
        "metrics": metric_names,
    }

headers = {
        "Authorization": f"Bearer {FRONT_TOKEN}",
        "Content-Type": "application/json",
        "Accept": "application/json",
    }

    # create the analytics report
resp = requests.post(
        "https://api2.frontapp.com/analytics/reports",
        json=body,
        headers=headers,
    )
resp.raise_for_status()
report = resp.json()

report_url = report["_links"]["self"]
while True:
        time.sleep(poll_interval_sec)
        check = requests.get(report_url, headers=headers)
        check.raise_for_status()
        data = check.json()
        status = data.get("status")
        if status == "done":
            break

2 Accessing earlier dates:
When I request a report for a date earlier than August 2025, I get:

{'_error': {'status': 403, 'title': 'Forbidden', 'message': 'Your plan does not give you access to that time period.'}}

Which plan would allow access to this earlier data?

Thank you very much in advance, and have a great day!