This error means Facebook blocked a message that CoSchedule tried to publish to your Facebook Page. It can happen on any plan.
This page is about CoSchedule posts to your Facebook Page. If you're blocked from sending messages in Messenger or Marketplace, contact Facebook through the Facebook Help Center.
What the error says
Facebook blocked this message from being sent. This is due to activity determined to be suspicious, abusive, or unsafe by Facebook.
Why it happens
Facebook judged activity on the Page to be suspicious, abusive or unsafe. Reports from other Facebook users can cause this, and the block is often temporary. Facebook doesn't tell CoSchedule why it blocked a message.
Fix it
- Check whether Facebook has restricted your Page. Facebook explains how in Check your Account Status on Facebook.
- If Facebook restricted the Page and you think that's a mistake, request a review from Facebook as it describes there.
- When the Page is no longer restricted, reschedule the message.
Prevent it
Follow Meta's Community Standards in everything you publish to the Page.