Kindly attach minimum 3 photos in your album thread every time. Threads with less than 3 photos is not recommended at all and it might be merged/removed by admins.
You can edit your thread and add more photos. Kindly do it ASAP if you don’t want your thread to be deleted. Go through this link to understand how to edit your thread: http://c.mi.com/thread-354537-1-0.html