In order to set up the integration on your page, click on Settings and then Integrations;
Select ConvertKit from the top menu;
Enter your ConvertKit credentials to log in;
To get your API secret code, go to Account in ConvertKit:
This step is done once per sub-account (or once per account for Core and Optimizer subscribers). After you’ve signed in, you will only select the account from a list. On the same page, you can add a new ConvertKit account and disconnect the ConvertKit integration for the page. After you select the account, click Continue;
Now select which form you want to use;
Enter or select the tags you want to use;
Now map your Instapage fields to match the ones in ConvertKit;
That’s it. If you followed the steps correctly, your form submissions will be sent to ConvertKit automatically.
Note: Make sure to test the integration with different email addresses because if you submit the form multiple times with the same email address the integration will flag the email as a spam.