Verify that you are using the correct API Client
Retrieving Time Series data with the API requires a specific Client, which differs from the API Client used for all other operations (create objects, update objects, etc).
To manipulate Time Series, you need to instantiate the following client:
Verify your objects' status
If you are retrieving no data from your objects, verify that their Status is ACTIVE.
Time Series data is not computed for Inactive objects.