After thorough monitoring, we are confident that Meta has resolved the issue. We have not received any further reports, and as a result, we are marking this incident as resolved. Thank you for bearing with us.

Over the past few hours, we've seen the publishing success rate for both Instagram and Threads return to normal for carousel (multi-image) posts. We're continuing to monitor the situation, but it appears that the issue within the API has now been resolved.

We are still awaiting further updates from Meta and will continue to monitor the situation closely. At present, it is not possible to automatically publish Instagram carousel posts (posts containing multiple images). As a workaround, we recommend scheduling posts with single images. If multiple images are essential, you can use the Instagram mobile notification workflow by selecting the "Notify Me" option, which you can learn more about here: https://support.buffer.com/article/658-using-notification-publishing

We sincerely apologise for the disruption and appreciate your continued patience. We will share further updates as soon as we receive more information from Meta.

We’ve confirmed this issue is due to a bug on Meta’s side, primarily affecting Instagram and Threads carousel (multi-image) posts.

As a workaround, you can schedule Instagram carousel posts using the “Notify Me” option, or limit posts to a single image.