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How to Connect Checkout.com to Fynlo

Hannah
Updated

You can connect Checkout.com to Fynlo to allow your clients to pay invoices online securely.

This guide will walk you through locating your API credentials and connecting them to Fynlo.

Before You Start

Make sure you have:

  • An active Checkout.com account

  • Access to the Checkout.com Dashboard

  • API keys and a Process Channel ID

Step 1: Log in to the Checkout.com Dashboard

  1. Go to: https://dashboard.checkout.com

  2. Log in to your account

Step 2: Locate Your API Keys

  1. In the dashboard, go to Settings

  2. Click API Keys

You will see:

  • Public Key

  • Secret Key

They usually look like:

pk_sbox_xxxxxxxxx
sk_sbox_xxxxxxxxx

or

pk_live_xxxxxxxxx
sk_live_xxxxxxxxx

Step 3: Locate Your Process Channel ID

  1. Go to Settings

  2. Click Channels

  3. Open your active processing channel

You will find a value that looks like:

pc_xxxxxxxxxxxxx

This is your Process Channel ID.

In Fynlo, this is entered in the Channel field.

Sandbox vs Live (Important)

Checkout.com provides two environments:

🔹 Sandbox (Test Mode)

  • Used for testing payments

  • No real money is charged

  • Keys start with:

    • pk_sbox_

    • sk_sbox_

  • Safe for setup and internal testing

Use Sandbox if:

  • You are still setting up

  • You want to test invoice payments

  • You are not ready to accept real transactions

🔹 Live (Production Mode)

  • Used for real payments

  • Customers are charged real money

  • Keys start with:

    • pk_live_

    • sk_live_

Use Live when:

  • You are ready to accept real client payments

  • Your testing is complete

⚠️ Important Rule

Do not mix environments.

If you use:

  • pk_sbox_ → you must also use sk_sbox_

  • pk_live_ → you must also use sk_live_

Both keys must belong to the same environment.

Step 4: Connect to Checkout.com in Fynlo

  1. Go to Settings

  2. Click Payment Gateways

  3. Click New Payment Gateway

  4. Select Platform: Checkout

  5. Enter the following:

Field What to Enter
Public Key Your pk_... key
Secret Key Your sk_... key
Channel Your pc_... Process Channel ID
Status Active

  1. Click Save

Your Checkout.com payment gateway is now connected.

Step 5: Test Your Setup

To confirm everything is working:

  1. Create a test invoice

  2. Send it to yourself

  3. Open the invoice link

  4. Attempt a payment

If the payment page loads correctly, your integration is successful.

Troubleshooting

Invalid Credentials

  • Ensure both keys are from the same environment (Sandbox or Live)

  • Double-check there are no extra spaces when copying

Payment Not Processing

  • Verify the correct Process Channel ID is entered

  • Confirm the gateway is set to Active

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