How can one confirm payment status directly on your service from a different programming language?

[steveify1]

Hi. I'm working on a GoURL SDK for NodeJs and I've been able to successfully implement the get_json_values() (named createPayment() in the code) method that starts the payment process. Now, I'm trying to implement the check_payment_live() (named checkPaymentStatus()) to allow the user directly check the status of his/her payment on demand. But each time I make a POST request to the https://coins.gourl.io/result.php route with the required data parsed as a query string, I get the following response:

{
        "status": "error",
        "err": "Invalid data submitted",
        "box": "",
        "boxtype": "",
        "order": "",
        "user": "",
        "userformat": "",
        "period": "",
        "amount": "",
        "amountusd": "",
        "coinlabel": "",
        "coinname": "",
        "addr": "",
        "tx": "",
        "confirmed": "",
        "timestamp": "",
        "date": "",
        "datetime": ""
    }

Here is the data that gets converted to a query string and sent in the request:

{
      g: privateKeyHash,
      b: options.boxID,
      o: options.orderID,
      u: options.userID,
      l: options.language,
      e: period,
      i: options.ipAddress,
      h: hash,
    }

Below is the implementation:

static async checkPaymentStatus(options: PaymentStatusOptions): Promise<any> {
    const privateKeyHash = crypto
      .createHash('sha512')
      .update(options.privateKey!)
      .digest('hex');

    const period = formatExpiryPeriod(options.period);

    const toHash = `${options.boxID}${privateKeyHash}${options.userID}${options.orderID}${options.language}${period}${options.ipAddress}`;
    const hash = md5(toHash);

    const data = {
      g: privateKeyHash,
      b: options.boxID,
      o: options.orderID,
      u: options.userID,
      l: options.language,
      e: period,
      i: options.ipAddress,
      h: hash,
    };

    const url = `https://coins.gourl.io/result.php`;

    const res = await axios.post(url, null, {
      params: data, // converts and attaches data as a query string
      headers: {
        'User-Agent': options.userAgent,
      },
      timeout: 20000,
    });
    
    return res.data;
  }

This NodeJs implementation doesn't attempt to store/use sessions or store the data in any database. It only provides the user the JSON data returned from the GoUrl server. I don't know why I keep getting the Invalid data submitted error. The data I send in the POST request to check payment status matches the data I send when initiating the payment in the first place. Please, I need help to understand what I'm not doing right.

This is the link to the repo: https://github.com/steveify1/node-gourl/tree/ft-check-payment-status-%2326.
The link to the Cyptobox class: https://github.com/steveify1/node-gourl/blob/ft-check-payment-status-%2326/lib/Cryptobox.ts

I understand that this is the repo for the PHP implementation, but I couldn't send a DM on twitter. Thanks.

[cryptoapi]

Please send your paymentbox ID, we will activate debug mode for you.

https://gourl.io/view/contact/Contact_Us.html