Instagram's API for posting direct video is experiencing intermittent technical issues, which may cause some posts to fail. This affects all third-party tools, and Instagram is investigating without a specific timeline for resolution.
If you receive an Instagram direct video post failure notification then we recommend that you retry the post. If a retry is unsuccessful then we recommend posting the video via our mobile app publishing workflow. See more information about this workflow here: https://support.sproutsocial.com/hc/en-us/articles/115000683263-Instagram-Publishing
We apologize for any inconvenience this has caused. We are continuing to monitor the issue, and will post additional updates as they become available. Please subscribe to receive further updates.