In order to connect your Impact affiliate account to Afflytics, you will need your Impact Account SID and Auth Token.
You can obtain your Account SID and Auth Token by visiting https://app.impact.com/login.user, logging into your Impact account, and navigating to the API Access page. On the top right navigation, click the cog icon and "Technical Settings". Once on this page, click "API Access".
Once on the API Access page, copy your Account SID and Auth Token and keep it somewhere safe.
Once you have your Account SID and Auth Token, you can connect your Impact account to Afflytics by clicking "Connect" under the Impact logo on the Afflytics Setup page.