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If you want to set minimum or maximum instalment lengths, or restrict when PayItMonthly finance is offered in cart - please also install the PayItMonthly Shopify Customisation App.

Shopify Payment Plugin Installation Guide

This guide will walk you through the simple steps to install and set up the PayItMonthly payment plugin on your Shopify store. Once installed, you’ll be able to offer flexible monthly payment options to your customers directly at checkout.

1. Install the App

Click the button below to visit the PayItMonthly Shopify plugin page and install.

Install Shopify plugin

2. Generate API Credentials

• Via (app.payitmonthly.uk) Log in to your PayItMonthly partner (merchant) account
• Navigate (purple section on left) to Admin → Developers → API Credentials
• Click “Create API User” button at top right of screen
• On drop down select “Shopify Integration”
• A new row will list your “Access Key ID” and a button to show your “Secret Access Key”
• Note when you click “Show Secrete Access Key” that it will only show once so copy it right away.

3. Connect the Plugin with Shopify

• Return to Shopify (in the PayItMonthly app setup screen)
• Enter the Access Key and Secret keys into the form provided
• Click “Return to Shopify” button (if shown) to continue setup.

4. Activate & Disable Test Mode

• Once credentials are accepted, disable Test Mode to go live
• Click Activate to enable PayItMonthly as a payment option at checkout then save.

5. Verify in Checkout

After activation, PayItMonthly should appear as a payment option in your Shopify checkout page. We recommend you run a test application to see that the customer application form correctly loads.

Install Shopify plugin