Privy ‑ Email, SMS & Pop Ups

I was looking for an alternative to Mailchimp for sending mass newsletters. And I spent two days trying to send the first campaign with Privy Newsletters. A total nightmare! 1- Unable to upload photos to its newsletters template, the workaround would be copy&paste the link of the photo to it; 2- Test email won't work; 3- When sending emails got this error massage "Segment cannot be empty. Please adjust your filters." even when using send to All Contacts... I haven't tried others functions yet but this buggy app I have no confidence at all!