They came out that way, that's about all I can say. Don't let that throw you. The story is complete and the chapters will post one a day until all 17 chapters and the epilogue are up.
In the meantime, if you don't want to wait, you can find the whole thing on iTunes,
If you hurry you'll be able to buy a copy before it becomes a free download when this Storiesonline posting is complete.