You can connect your Shopify account two different ways:

Option 1 - Adding from the Shopify app store

Option 2 - Connecting Shopify from your account

Both will work just as well. Option 2 will require you to sign up for first.

Option 1

Go to the Shopify App Store and find the app. Click the "Get" button on the right side of the page. You'll then need to login with your Shopify credentials and authorize

Option 2

Sign up for a account at From the merchant portal, click Settings then integrations. In the Shopify section, click the Connect Shopify account link. You'll be taken to a Shopify authorization page to authorize

After you've connected your Shopify account, you'll want to review the settings for the integration with your Shopify account. See our Selling with payment plans on your Shopify website for more details.