Use CartHook to checkout on your site? Be sure to connect your Refersion account, this will ensure order information is sent to Refersion. Follow the steps below:

IMPORTANT NOTE: As of February 2021, Shopify merchants are able to use CartHook for upsells while providing a unified checkout experience for their customers through the Shopify checkout. If your store’s upsell flow is before the unified checkout, then there's no additional configuration needed for this to work. However, if your upsell flow is after the unified checkout, then conversions in Refersion that go through the unified checkout will be for the amount the customer paid BEFORE going through any upsell flows.

Login to your CartHook account. Once logged in, click on your name in the upper-right corner and click Settings.
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Once you are in Settings, click the Apps button in the top navigation. This will allow you to choose Refersion and connect your account.
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In the Refersion Affiliates box, enter your Refersion URL, Refersion Public Key, and Refersion Secret Key. Your Refersion Domain can be found in Refersion by going to Dashboard > Affiliate Signup. Your Refersion API keys can be found by logging in to your Refersion account and going to Account > Settings > Refersion API. The secret key will be hidden until you click Show (more info here).

Click Save Settings and you're done! Run a Test Order to make sure everything is tracking correctly, and shoot us an email at [email protected] if you have any questions!