How do I add contacts from forms to GetResponse?

Frequently asked questions Data Capture Forms

Copy the API key in your GetResponse account.
Go to Tilda, Site settings → Forms → GetResponse.
Enter the GetResponse API key.
Select the subscriber list to which data should be added, or create a new one.
Confirm or skip the step "Assign the service to all forms on the website?".
If you skipped the previous step, go to the web page Editor, open the Content panel of the block containing the form and select GetResponse as a Form data receiver service.
Publish all pages.