API not posting

Cool plugin! The UI is so simple.

Here’s a screenshot of my settings:
https://ibb.co/Dzf6tZ8

I’m only trying to pass the email field and I’m getting an error: {“success”:false,”message”:”Validation errors”,”data”:{“subscriber_data”:[“subscriber data je povinn\u00e1 polo\u017eka”],”subscriber_data.email”:[“email_required empty”]}}

Here’s the doc for the api: https://ecomailczv2.docs.apiary.io/#reference/lists/list-subscribe-bulk/add-new-subscriber-to-list

Any ideas? I’ve posted this on your Youtube video as well hoping for a quick answer.

Thank you!