How to get API Key and Form ID of ConvertKit
3. Click On Show and copy the API Key
4. Go to Landing Pages and Form and click on Create New
5. Select type Form, choose a format Form and Template
6. Copy the Form ID
Example for ConverKit profile
All fields name are supported, but you need create it first. Learn more How to create Custom field here https://help.convertkit.com/en/articles/2502504-how-to-add-custom-fields-to-subscribers
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