Own courier in backend "Get a quote" not in rate api response

Url: https://api.easyship.com/rate/v1/rates

Payload:
{
"apply_shipping_rules": true,
"box": {
"height": 33.5,
"width": 42.1,
"length": 54.8
},
"destination_country_alpha2": "FR",
"is_insured": false,
"items": [
{
"actual_weight": "2.000000",
"height": 33.5,
"width": 42.1,
"length": 54.8,
"category": "toys",
"description": "",
"declared_currency": "HKD",
"declared_customs_value": 0,
"quantity": 1
}
],
"origin_country_alpha2": "HK",
"output_currency": "HKD"
}

The "Showcase Techno - UPS Worldwide Saver®" only in backend but not in the API response