Cost+Docs

PrestaShop

Integrate Cost+ with your PrestaShop store (9.x, 8.x, and 1.7)

PrestaShop

Integrate Cost+ as a payment method in your PrestaShop store. The Cost+ module is available for PrestaShop 9.x, PrestaShop 8.x, and PrestaShop 1.7.

Prerequisites

  • Active Cost+ merchant account
  • PrestaShop 9.1 or later
  • PHP 8.1 or later
  • SSL/HTTPS enabled
  • Admin access to your PrestaShop back office
  • Active Cost+ merchant account
  • PrestaShop 8.x installation
  • PHP 8.0 or later
  • Admin access to your PrestaShop back office
  • MySQL 5.4 or higher
  • Active Cost+ merchant account
  • PrestaShop 1.7.x installation
  • PHP 5.4 or later
  • Admin access to your PrestaShop back office
  • MySQL 5.4 or higher

1. Install the Module

Download the module from GitHub.

  1. Go to Modules → Module Manager in your admin panel
  2. Click Upload a module
  3. Drag and drop the ZIP file or select it manually
  4. Wait for the installation to finish
  5. Search for "NoPayn" and click Configure

Method B: Manual Upload

  1. Copy the nopaynpayment/ folder into your PrestaShop modules/ directory
  2. Go to Modules → Module Manager
  3. Search for "NoPayn" and click Install
  4. Click Configure to open the settings

Download the module from GitHub.

  1. Go to Improve > Module Manager in your admin panel
  2. Click Upload a module
  3. Drag and drop the ZIP file or select it manually
  4. Wait for the installation to finish
  5. Scroll down to the "Other" section and click Configure under Cost+

PrestaShop 8 Module Manager

Upload a module dialog

Method B: Manual Upload via (S)FTP

  1. Extract the downloaded ZIP file
  2. Using an SFTP client (e.g. FileZilla, WinSCP), upload all folders to the /modules/ directory in your PrestaShop installation
  3. Go to Improve > Modules > Module Catalog
  4. Search for "Cost+" -- check the Uninstalled Modules tab if needed
  5. Click Install

Download the module from GitHub.

  1. Go to Improve > Module Manager in your admin panel
  2. Click Upload a module
  3. Drag and drop the ZIP file or select it manually
  4. Wait for the installation to finish
  5. Scroll down to the "Other" section and click Configure under Cost+

PrestaShop 1.7 Module Manager

Upload a module dialog

Method B: Manual Upload via (S)FTP

  1. Extract the downloaded ZIP file
  2. Using an SFTP client (e.g. FileZilla, WinSCP), upload all folders to the /modules/ directory in your PrestaShop installation
  3. Go to Modules > Module Manager
  4. Search for "Cost+" -- check the Uninstalled Modules tab if needed
  5. Click Install

2. Enter API Credentials

Log into the Merchant Portal and navigate to Websites, then click on the website you want to connect. Click on Integration where you will find your API key.

Cost+ Merchant Portal showing API key

In the NoPayn module configuration, enter your API Key and configure the following settings:

SettingDescription
API KeyYour NoPayn API key
Credit / Debit CardEnable/disable credit card payments
Apple PayEnable/disable Apple Pay
Google PayEnable/disable Google Pay
Vipps MobilePayEnable/disable Vipps MobilePay
Manual CaptureAuthorize credit card payments only — capture when you ship
Debug LoggingEnable detailed logging to var/logs/nopayn_debug.log

Paste the key into the API Key field in the Cost+ Library configuration page and click Save.

Cost+ configuration page in PrestaShop 8

Paste the key into the API Key field in the Cost+ Library configuration page and click Save.

Cost+ configuration page in PrestaShop 1.7

For PrestaShop 8.x and 1.7 hosting environments, enable the cURL CA bundle option during configuration to avoid SSL certificate issues.

3. Enable Payment Methods

Payment methods are configured directly in the module settings (see step 2 above). Toggle each method on or off as needed.

Only activate the payment methods you have been approved for and received confirmation for.

After saving your API key, upload each payment method module separately via Upload a module.

Return to Improve > Module Manager, click Upload a module again, and upload each ZIP file for the payment methods you want to enable (e.g. Credit Card, MobilePay, Swish).

Only activate the payment methods you have been approved for and received confirmation for.

Payment modules will either have a Configure option (if additional setup is needed) or just an Enable/Disable toggle.

After saving your API key, upload each payment method module separately via Upload a module.

Return to Improve > Module Manager, click Upload a module again, and upload each ZIP file for the payment methods you want to enable (e.g. Credit Card, MobilePay, Swish).

Only activate the payment methods you have been approved for and received confirmation for.

Payment modules will either have a Configure option (if additional setup is needed) or just an Enable/Disable toggle.

Payment Flow

  1. Customer selects a Cost+ payment method at checkout
  2. Customer is redirected to the Cost+ Hosted Payment Page (HPP)
  3. After completing payment, customer is redirected back to the store
  4. A webhook confirms the payment status server-to-server

Webhook

The webhook URL is automatically configured per order:

https://your-shop.com/module/nopaynpayment/webhook

No manual webhook configuration is required — the module handles registration automatically.

Manual Capture

When enabled for credit card payments:

  • Payment is authorized but not captured at checkout
  • Capture occurs when the order is shipped / marked as completed
  • If the order is cancelled, the authorization is automatically voided

Auto-Refund

If a captured payment order is cancelled, the module automatically issues a full refund. Partial refunds can be processed via PrestaShop credit slips.

Checkout Button Labels

For the best user experience with offsite redirect flows, consider updating the checkout button label to "Review order" instead of "Confirm and pay", since the actual payment happens on the Cost+ hosted page. This is a global PrestaShop setting, not module-specific.

Webhook

The webhook is automatically configured by the module. No manual setup is required.

Webhook

The webhook is automatically configured by the module. No manual setup is required.

4. Final Steps and Testing

  1. Double-check all enabled payment methods
  2. Place a few test transactions -- both successful and failed -- to ensure everything flows smoothly
  3. Configure advanced behavior such as manual vs. auto-capture depending on your fulfillment process

Support

Need help? Reach out to our support team at support@costplus.io.

On this page

Prerequisites1. Install the ModuleMethod A: Upload Through Admin Panel (Recommended)Method B: Manual UploadMethod A: Upload Through Admin Panel (Recommended)Method B: Manual Upload via (S)FTPMethod A: Upload Through Admin Panel (Recommended)Method B: Manual Upload via (S)FTP2. Enter API Credentials3. Enable Payment MethodsPayment FlowWebhookManual CaptureAuto-RefundCheckout Button LabelsWebhookWebhook4. Final Steps and TestingSupport