SMAPI client supports the older and very limited Metrics API v1, but it doesn't support the newest and improved [Metrics API v2](https://developer.amazon.com/en-US/docs/alexa/smapi/metrics-api.html). See https://github.com/alexa/alexa-skills-kit-sdk-for-nodejs/issues/739
SMAPI client supports the older and very limited Metrics API v1, but it doesn't support the newest and improved Metrics API v2.
See alexa/alexa-skills-kit-sdk-for-nodejs#739