Having problem with a template

Hi all! I am hoping for fast help here! I am using a template from the webflow store. But there seems to be some issues with it?

Can anyone tell why this form does not send while pressing the submit button?

—> Hyr hus på Evia i Grekland - Kontakta mig för pris- och bokningsförfrågan

Also why don’t the background video play in mobile view?

—> Hyr hus på Evia i Grekland - Om huset Karla


Here is my site Read-Only: https://preview.webflow.com/preview/kastri?utm_medium=preview_link&utm_source=dashboard&utm_content=kastri&preview=6353de162bf5a170b65248ede9e188cd&workflow=preview
(how to share your site Read-Only link)