If you create your schedules in Drag & Drop Preview but the posts do not get posted to Instagram at the set time, and you see posts marked as "Expired" (see the picture below), please keep reading...
Why my posts expired?
After adding your photos/videos to the Drag & Drop Preview and editing the captions and position of the posts, you will need to tap the "Upload" button to upload your schedules.
Otherwise the posts you create are still in the draft mode. When the post is in the draft mode, it will not be posted to Instagram, and you will see the post time labeled on the thumbnail with a white background.
After you click the upload button, you will see the post shows in your Apphi home page. When you enter the Drag & Drop Preview again, you will see the post time labeled on the thumbnail with a black background. That means your post is ready to post.