SignBox funktioniert nicht

Access your cloud documents from within the App or use diese App Extension to open any PDF document from any other App, simple and straight forward!. - Use your TouchID to store, protect, and retrieve your Signature. - Seal your signature onto any PDF, from anywhere with diese App extension. - Pay Once!. No Annual Subscription. No Monthly fees.  Using your TouchID or passcode, seal your protected signature onto any PDF document - No Registration. No Cloud Signing.  Email, print, Save to cloud storage, or simply share to any of your favorite Apps. Run any other extension.  Conveniently add your initials, print your name, add date, or even scribble your directives alongside your signature.  Never give your signature away to cloud server again !  Only your own TouchID or passcode can unlock your signature.  The actual signing process totally happens within your device without it leaving the memory of your device and without communicating to any server.  Your signature remains in your device.  Your signature will not be editable or copy-able by recipients. Add Open Passwords.  Sign with diese App Extension any PDF document from within any of your favorite Apps.  ONLY Accessed by TouchID or passcode. Not stored on any cloud.  You don't need to setup an account. No registration. No Cloud account. No Subscription.  Convenient —— Your signature is only a Touch away.  Your signature will never look better.  Smoothened and inked with vector strokes. Fine print on any scale.  All conveniently within your device.