Datadog metrics not appearing in metrics explorer

Hi, we’re currently getting started with DataDog and trying to push custom metrics using the HTTP API. We’re getting an ok status and code 202, however it’s not appearing in the metrics explorer, nor anywhere else. Any idea what we might be doing wrong?

I would ensure both the API key and APP key are correct for the org you are trying to submit to. There are also some payload limits described here:
Note as well that Timestamps should be in POSIX time in seconds, and cannot be more than ten minutes in the future or more than one hour in the past.