How to perform action from CustomGPT builder

Hello,

I have this schema:

{
  "openapi": "3.1.0",
  "info": {
    "title": "Save to Notion",
    "description": "Saves recipe to Notion",
    "version": "v1.0.0"
  },
  "servers": [
    {
      "url": "https://run.relay.app"
    }
  ],
  "paths": {
    "/api/v1/playbook/xxx/trigger/yyy": {
      "post": {
        "description": "Saves recipe to Notion",
        "operationId": "SaveRecipeToNotion",
        "parameters": [
          {
            "name": "recipes",
            "in": "query",
            "description": "The array of recipes to save to Notion",
            "required": true,
            "schema": {
              "type": "array",
              "items": {
                "type": "object",
                "properties": {
                  "name": {
                    "type": "string"
                  },
                  "preparationTime": {
                    "type": "string"
                  },

                  "cookingTime": {
                    "type": "string"
                  },
                  "difficulty": {
                    "type": "string"
                  },
                  "amountOfPeople": {
                    "type": "string"
                  },
                  "groceries": {
                    "type": "array",
                    "items": {
                      "type": "object",
                      "properties": {
                        "name": {
                          "type": "string"
                        },
                        "amount": {
                          "type": "string"
                        }
                      },
                      "required": [
                        "name",
                        "amount"
                      ]
                    }
                  },
                  "steps": {
                    "type": "array",
                    "items": {
                      "type": "string"
                    }
                  }
                },
                "required": [
                  "name",
                  "preparationTime",
                  "cookingTime",
                  "difficulty",
                  "amountOfPeople",
                  "groceries",
                  "steps"
                ]
              }
            }
          }
        ],
        "deprecated": false
      }
    }
  },
  "components": {
    "schemas": {}
  }
}

but I am unable to call it from CustomGPT builder. When I asked chatGPT directly it didn’t help, the curl he gave me worked without any problem in terminal and I also tried to call it from postman and node.js. Everything worked without any problem. Only problem is with calling it directly from CustomGPT builder.

Can you please help?