QR Code Scanner funktioniert nicht

QR Code Reader - QR & Barcode is a free code reader tool to scan QR code & barcode using the camera of the device. - This tool supports a variety of code: QR, Aztec, Barcode, Datamatrix, EAN-13, EAN-8, PDF417, Interleaved 2 of 5, Code 39, Code 93, Code39Mod43... - This tool automatically recognizes the type of information encoded in the QR code and display them accordingly, such as URL, email, Wifi information, vCard, SMS... - A flashlight function to facilitate the scan of the code in a low-light environment. - This tool automatically keeps track of the code that users have scanned and users can access them later in a separate History tab on the app. - This tool also allows users to generate QR code and Barcode to share information to other people easily and fast.  Enjoy using this handy tool for your QR code & barcode activities.  Your subscription will renew automatically, unless you turn off auto-renew at least 24 hours before the end of the current period.  The cost of renewal will be charged to your account in the 24 hours prior to the end of the current period.  You can manage your subscriptions and turn off auto-renewal from your Account Settings after the purchase.  When canceling a subscription, your subscription will stay active until the end of the period.  Auto-renewal will be disabled, but the current subscription will not be refunded.  A payment will be charged to your iTunes Account as soon as you confirm your purchase.  Any unused portion of the free trial period will be forfeited when purchasing a subscription.