1. Login to your ActiveCampaign account
2. Get APP URL and API Key
Please go to "Settings" -> "Developer" menu to get APP URL and API key
3. Get List ID
Please click to menu "Lists" in ActiveCampaign dashboard
Please click to the existing list name or create the new List by click to "Add a list" button
After clicking to the list name, please copy your list ID in your site URL as image below.
Example for ActiveCampaign profile