Hi — there seems to have been a delay with the automatic processing of your order. Your product should be available on the store page within ten minutes, but if not, please email us at support@razeware.com so we can make sure you get access to your purchased product. We apologize for the inconvenience!
Hi @yangwulong1978, Sorry to hear there was a delay processing your order! I checked your order and it has gone through now so you should be able to access the book.
To download it go to store.raywenderlich.com and log in (button in the upper right corner). Once you are logged in, you’ll see the orange download button below the image for iOS 11 by Tutorials.