Reply To: Where can i found the Contact Form pop-ul (and how can i edit it)

Hello,

As per screen provided, you are talking about Popup element which contains Contac form. Edit the page http://prntscr.com/kz9696

Check which contact form has been chosen http://prntscr.com/kz97jj

Navigate to the Contact Form plugin > Contact forms http://prntscr.com/kz984z

Best Regards