We've created this Forum Thread with some workarounds and advice to assist you in publishing you ebook.
Book not being shelved?
Last night I tried publishing my first book with private access restrictions and I kept getting the message,
"Oops! You've arrived here before our system could shelve this product.
We'll reload this page automatically. When the product is ready, this message will disappear." I woke up today and still have the issue. I tried republishing, but the new one had the same issue. I have also tried in different browsers. I found only one other form saying that it could be language based, but my book's language is English, as it is listed.
Any help would be apprectiated,