auto send emails not sent

I’m using Mailpoet 2 with sendgrid. The sendgrid tests works well so the routing is good. I have set a subscriber, a daily newsletter and a cron job (called every minutes)

But their is no way to send the news, even when I call the URL manually.

After a call to the wp-cron url, the status of my newsletter is :

Next send out in (if there’s new content)
That not a logical status. I tried everything but i’m not able to make it work