In case, if you’re login into Amazon account then the User’s login information should be correct and accurate. Amazon may ask for additional authentication process at the time of registering the new Fire TV device especially when the users are registering the device for the first time. In order to get details about fixing the issues like login issue or Fire TV Stick Frozen, then you may contact to experts of Amazon by dialing their Phone Number 1-800-987-6301, which is toll free.