You can log out of the Amazon app by heading to the Settings menu, and log out of the website by using the "Account & Lists" menu instead.
If you want to unhide or remove a lock from an app, long press on the app, tap Don't Require Face ID and enter your Face ID or passcode. Your locked apps will now be unlocked and your hidden apps will ...
You can sign out of the Kindle app on a mobile device by accessing the settings to "Deregister this Kindle." ...