To be able to collect the information entered by your prospects in your landing page, you will need an autoresponder and integrate it with 10 Minute Funnels. To integrate the autoresponder, you will need to locate the autoresponder's API keys and paste it in on your 10 Minute Funnels account through the 3rd Party Integrations in Account Settings.
Log in to your Convertkit Account
Click your name or avatar
Select Account Settings
Copy the API Key and API Secret