UPDATE: The issue has been resolved!
We are currently experiencing issues with Instagram Carousel posts. For the past seven hours, the feature has not been functioning as expected. Our team has reported the issue to Meta developers, and we are actively monitoring the situation for a resolution.
For real-time updates, you can track the issue here: Instagram Carousel Bug Report.
Please note that single image posts are still processing without any issues.
We appreciate your patience and will keep you informed as soon as this is resolved.