[28th Aug 5AM EET] We are glad to inform that Instagram has fixed the issue. Sorry for this inconvenience and thank you for your patience!
[27th Aug 5PM EET] Instagram is still fixing the issue. Thank you for your patience!
[26th Aug 2PM EET] Instagram has identified the bug at their end and dedicated a team to fix it. We are sorry for the disruption this is causing, and hope to get this resolved soon.
[26th Aug 8AM EET] We are still investigating the issue and hope to get this resolved soon.
[25th Aug 10PM EET] Unfortunately, Instagram posts fails when being scheduled or published as direct posts containing videos. We are investigating the issue.