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How to Integrate PayLexer with FluentCart

Connect PayLexer to FluentCart to handle secure payment processing across multiple gateways directly from your WordPress store.

FluentCart is a lightweight WordPress shopping cart and checkout plugin designed for creators, coaches, and digital product sellers. It enables you to sell products and services with a streamlined checkout experience directly from your WordPress site.

PayLexer integrates with FluentCart to handle secure payment processing across multiple gateways (like Stripe, Airwallex, Paystack, Square, etc).

Supported Features

  • One-time payments - Accept full payment for a product or service in a single transaction.

  • Multiple payment gateways and websites - Connect and manage several gateways and websites from one PayLexer account.

  • Test mode via FluentCart's Store Mode - Safely test payments without real charges before going live.

  • Live payments - Process real transactions securely once setup is verified.

  • Simplified checkout - Optimized checkout flow for better conversion.

Before You Start

Prerequisites

Make sure you have:

Setup Journey

Haven't configured PayLexer yet? Follow these steps in order:

Integration Steps

Step 1: Choose WordPress as the Platform

In the Add Website flow inside your PayLexer dashboard:

  • Select WordPress as the platform

  • Download the PayLexer WordPress plugin (.zip file)

  • Copy the credentials generated by PayLexer:

    • Client ID

    • Site Key

PayLexer Add Website flow showing WordPress selected as the platform type, with a download plugin button and Client ID and Site Key credentials displayed
PayLexer Add Website flow showing WordPress selected as the platform type, with a download plugin button and Client ID and Site Key credentials displayed

Keep this tab open - you will paste these credentials into WordPress in Step 3.

Step 2: Install the PayLexer WordPress Plugin

Go to WordPress Admin - Plugins - Add Plugin

  • Click Upload Plugin

  • Click Choose File and select the .zip file you downloaded from PayLexer

  • Click Install Now

  • Click Activate once installation completes

The PayLexer plugin is now active on your WordPress site.

Step 3: Connect FluentCart to PayLexer

Go to FluentCart - Settings - Payment Settings in your WordPress admin.

You will see two fields:

  • Client ID

  • Site Key

FluentCart Payment Settings page showing Client ID and Site Key input fields empty and ready to fill
FluentCart Payment Settings page showing Client ID and Site Key input fields empty and ready to fill

  • Copy the Client ID and Site Key from PayLexer

  • Paste them into FluentCart - Settings - Payment Settings

  • Click Save Settings

This establishes a secure connection between FluentCart and PayLexer.

Step 4: Test the Connection

Return to your PayLexer dashboard and go back to the Add Website flow.

  • Click Test Connection

Success: Website shows as Connected.

Your website is now connected. Payments can be processed once at least one gateway is active.

On failure, try checking the Website URL or the credentials you have pasted in FluentCart.

Your website must show as Connected before payments can be processed.

Step 5: Enable PayLexer Payment Gateways in FluentCart

Once the connection is successful, your PayLexer-configured gateways appear automatically in FluentCart.

Go to FluentCart - Settings:

  • Click Manage next to any gateway to configure it individually
  • Use the Payment Activation toggle to enable or disable a specific gateway

If a gateway does not appear, confirm it is fully configured and active in your PayLexer dashboard, then re-save your credentials in FluentCart.

PayLexer will now handle payment processing for FluentCart orders.

Test Mode & Debug Mode

PayLexer supports full testing without real charges.

How Test Mode Works

Test Mode is autodetected. PayLexer reads the Store Mode setting directly from FluentCart - no manual toggle per gateway is required.

To set or verify your Store Mode:

  1. Go to FluentCart - Settings - Store Settings - Store Setup

  2. Locate the Store Mode field

  3. Select Test for setup and testing, or Live for real transactions

When Store Mode is set to Test:

  • Uses Test credentials in PayLexer's Payment Gateway Configuration page

  • FluentCart orders will be created normally

  • Payments are processed in test mode

When Store Mode is set to Live, the Live credentials in PayLexer's Payment Gateway Configuration page are used.

Confirm** Store Mode** is set to Test in FluentCart - Settings - Store Settings - Store Setup before placing a test order.

Payment Flow Overview

  1. Customer views a product or offer in FluentCart

  2. Customer proceeds to checkout

  3. Payment Gateway from PayLexer is selected at checkout

  4. Payment is processed via the configured gateway

  5. Order is confirmed based on payment result

  6. Order appears in:

    • PayLexer Orders

    • FluentCart Orders

A new PayLexer order is created for every payment attempt.

Payment Flow Overview

A new PayLexer order is created for every payment attempt.

Next Steps: Test Transactions & Integration

After connecting FluentCart to PayLexer and enabling gateways, it's important to validate that payments are processed correctly.

  • Basic testing in FluentCart: Use the Test Mode above to create orders without real charges.

  • Advanced or platform-specific testing: For full test transactions, including refunds and multi-gateway scenarios, follow our dedicated guide:

Test Transactions & Platform Integration Guide →

This guide uses Stripe as an example to walk through real test transactions, helping you validate your full payment flow before going live.

Troubleshooting

Best Practices

  • Always test with Test credentials before switching to Live

  • Enable webhooks for better reliability

  • Run one small real payment after going live to confirm everything works

  • Test the complete checkout flow including confirmation emails

  • Monitor both PayLexer and FluentCart dashboards during testing

Final Checklist

Before going live:

  • Payment gateway tested successfully

  • At least one payment method enabled

  • Website status shows Active

  • FluentCart payment method set to PayLexer

  • Live credentials added (not just test)

  • Store Mode set to Live in FluentCart - Settings - Store Settings - Store Setup

  • Confirmation emails working properly

FAQs

Still Have Questions?

Learn More

For settings and advanced configuration, see the FluentCart documentation.

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