Multiple Shortcodes

To have multiple forms (each for a different subscriber list) we created multiple widgets with individual configurations. We then use each shortcode to render the forms (on different pages). This works so far.

Problem: The opt-in email is always the same. It is ignoring the individual settings. So people can only subscribe to one list.

Hint: Depending on wich widget was saved last – this is the email that is send to the user.

What can I do? We need a quick fix. Some code snippet to fix this is totally fine for now. Urgent!