SumUp Payments for WHMCS

SumUp Payments for WHMCS is a complete commercial payment gateway integration developed by ModulesGuard.

It allows WHMCS businesses to accept online payments through SumUp Hosted Checkout while providing a dedicated administration interface for monitoring payments, transactions, payment intentions, invoices, webhooks and synchronization activity.

Key Features

SumUp Hosted Checkout integration Secure payment redirection Automatic WHMCS invoice payment recording Real-time transaction status tracking Payment intention monitoring WHMCS invoice reconciliation Multi-currency support based on your WHMCS configuration Configurable transaction synchronization Webhook reception and monitoring Detailed diagnostic and error logs Merchant account and API connection checks Modern administration dashboard English and French language support Remote version and update information Commercial licence protection

Complete Administration Dashboard

The included administration addon provides a clear overview of your SumUp payment activity directly inside WHMCS.

Administrators can review:

Total collected payment volume Successful, pending and failed payments Average transaction value Recent transactions Payment intentions Related WHMCS invoices Webhook activity Synchronization status API and configuration errors

Secure Hosted Payments

Customers are redirected to the secure SumUp Hosted Checkout environment to complete their payment.

Once the payment is confirmed, the module verifies the transaction and records the payment against the corresponding WHMCS invoice.

Sensitive payment card information is not entered or stored directly inside WHMCS.

Transaction and Invoice Reconciliation

The module links SumUp transactions with WHMCS invoices and stores the available payment identifiers for easier administration and troubleshooting.

Synchronization tools help recover and update transaction information when a webhook is delayed or when manual verification is required.

Webhook Monitoring

The administration interface provides visibility into received SumUp webhook events.

This makes it easier to identify:

Delayed notifications Invalid webhook requests Missing transaction associations API communication errors Payment status inconsistencies

Multi-Currency Support

The module uses the currencies configured in WHMCS and displays transaction amounts using the appropriate currency information.

Currency handling can be configured according to your SumUp merchant account and WHMCS billing setup.

Diagnostics and Error Logging

Built-in diagnostic tools help administrators verify:

SumUp API connectivity Merchant account configuration Required PHP extensions Webhook processing Transaction synchronization WHMCS integration status

Detailed logs are available to simplify troubleshooting and support requests.

Included Components

The package includes:

SumUp payment gateway for WHMCS SumUp callback handler SumUp administration addon Transaction monitoring interface Payment intention tracking Invoice reconciliation tools Webhook monitoring Diagnostic and error logs English and French translations Installation documentation

Requirements

A valid WHMCS installation A SumUp merchant account Valid SumUp API credentials PHP cURL extension PHP JSON extension PHP OpenSSL extension An active ModulesGuard licence

Licence

This is a commercial product requiring an active ModulesGuard licence.

One licence is valid for one WHMCS installation, subject to the licence terms displayed on the ModulesGuard website.

Support and Updates

An active licence provides access to supported product updates and technical assistance according to the purchased plan.

SumUp is a trademark of SumUp. This independent integration is developed by ModulesGuard and is not an official SumUp product.