Accept secure online card payments in your OpenCart store using SimplePay. The module provides a clear and streamlined payment process, signature-protected and reliable IPN handling, multistore support, as well as transaction lookup and refunds directly from the OpenCart admin panel.

Key Features

- SimplePay v2 payment flow for HUF and EUR merchant accounts
- Sandbox and live modes
- HMAC-SHA384 signature verification for BACK and IPN responses
- Idempotent IPN processing for safe handling of repeated notifications
- Separately configurable pending, successful and failed order statuses
- Detailed IPN diagnostic logging without exposing sensitive data
- Transaction status lookup from the OpenCart admin panel
- Secure full and partial refunds
- Optional cart data transmission
- Automatic SCA/3DS customer data handling
- Multistore support with separate settings and IPN URL for each store
- Custom payment subtitle or short description at checkout
- Optional small SimplePay logo
- Clearly visible testing notice in Sandbox mode
- Modern, user-friendly administration interface
- Hungarian and English language files

Requirements

- OpenCart 3 or 4
- PHP 7.x-8.x with cURL, JSON and hash/HMAC support
- Webshop using an HTTPS connection
- Active SimplePay merchant account with the appropriate HUF and/or EUR identifiers
- Valid module license

Important: The SimplePay merchant agreement, merchant account and transaction fees are not included with the module. This is an independent integration and does not imply certification, endorsement, support or affiliation by SimplePay or OpenCart.

Installation

1. Upload the ".ocmod.zip" package via the OpenCart Installer
2. Refresh Modifications
3. Install the module from the Modules list
4. Enter and verify the license key
5. Save the settings