Not getting Smart Post rates

I have FedEx Smart Post enabled as a shipping service with the correct indicia type and hub ID selected. However, I'm not getting any Smart Post rates returned. The service is enabled on FedEx's side. I am not including the insurance value (#2690041: Smart Post fails to return rate if insurance rates are collected).

Here is my request (with sensitive info removed) and the response is attached.

array (
  'TransactionDetail' => 
  array (
    'CustomerTransactionId' => ' *** Rate Request v13 using Drupal Commerce ***',
  ),
  'Version' => 
  array (
    'ServiceId' => 'crs',
    'Major' => '13',
    'Intermediate' => '0',
    'Minor' => '0',
  ),
  'ReturnTransitAndCommit' => true,
  'RequestedShipment' => 
  array (
    'DropoffType' => 'REGULAR_PICKUP',
    'ShipTimestamp' => '2019-01-31T10:15:59-05:00',
    'PackagingType' => 'YOUR_PACKAGING',
    'Shipper' => 
    array (
      'Contact' => 
      array (
        'PersonName' => 'MrPeanut',
        'CompanyName' => 'MrPeanut',
      ),
      'Address' => 
      array (
        'StreetLines' => 
        array (
          0 => '123 My Address Here',
        ),
        'City' => 'Peanutville',
        'StateOrProvinceCode' => 'NY',
        'PostalCode' => '12345',
        'CountryCode' => 'US',
      ),
    ),
    'Recipient' => 
    array (
      'Contact' => 
      array (
        'PersonName' => 'MrPeanut Recipient',
      ),
      'Address' => 
      array (
        'StreetLines' => 
        array (
          0 => '456 Recipient Address',
        ),
        'City' => 'Peanutville',
        'PostalCode' => '12345',
        'CountryCode' => 'US',
        'Residential' => true,
        'StateOrProvinceCode' => 'NY',
      ),
    ),
    'RateRequestTypes' => 'ACCOUNT',
    'PackageDetail' => 'INDIVIDUAL_PACKAGES',
    'PackageCount' => 1,
    'RequestedPackageLineItems' => 
    array (
      0 => 
      array (
        'SequenceNumber' => 1,
        'GroupPackageCount' => 1,
        'Weight' => 
        array (
          'Value' => 1.5,
          'Units' => 'LB',
        ),
        'Dimensions' => 
        array (
          'Length' => '12',
          'Width' => '12',
          'Height' => '12',
          'Units' => 'IN',
        ),
      ),
    ),
    'SmartPostDetail' => 
    array (
      'Indicia' => 'PARCEL_SELECT',
      'HubId' => '5150',
    ),
  ),
  'WebAuthenticationDetail' => 
  array (
    'UserCredential' => 
    array (
      'Key' => 'removed',
      'Password' => 'removed',
    ),
  ),
  'ClientDetail' => 
  array (
    'AccountNumber' => 'removed',
    'MeterNumber' => 'removed',
  ),
)