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:
Add Refersion to CartHook
Login to your CartHook account. Once logged in, click on your name in the upper-right corner and click Settings.
Once you are in Settings, click the Apps button in the top navigation. This will allow you to choose Refersion and connect your account.
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).