Dragomir Danut

This will sound stupid but try simply logging your device off and than back on from settings tab. This solves such problems the fastest.

Can you describe the device as good as you can? Is is it black and white or color display? Is it a touch display or you have buttons on it? Depending on what device you have I might be able to give you some pointers. What do you mean by "There is a lock icon" ? Update (08/14/2016): If it's an e-reader and you forgot the display lock pin just enter 111222777 and you should be able to reset it to factory settings. If it is one with keyboard enter resetmykindle. Kindle fire devices are a bit more complex to reset:)

Hard Reset your device by holding the On/Off button 40 seconds or until you see a picture of a tree with a boy reading underneath it. If the Kindle doesn't boot set it to charge for about 2 hours or even better over night and try hard resetting the device again. If this doesn't work you can assume that it's a hardware issue and proceed to contacting client service.

You should check if the Book is compatible with your device. On the product page you will see something like " Available for following devices" if this doesn't appear than the e-Book is compatible with all Kindle models. If the option is there you have to check if your device is listed otherwise it's incompatible. If your device is compatible but the book still doesn't download try following: - Hard Reset your device by holding the On/Off button 40 seconds or until you see a picture of a tree with a boy reading underneath it. - Set your device in flight mode for 10-15 seconds after which turn flight mode off. - Sever the wifi connection and sett it up again under settings. - Tip on the button Cloud and try downloading the book manually. - Log off and back on your account under settings. - Check under "Manage your content and devices" (https://www.amazon.com/mn/dcw/myx.html/r... settings if Whispersync is on or off. If nothing helps from here contact Amazon Client Service since you might have some issues...