Voice Record Pro funktioniert nicht

It allows you to record voice memos and on-site sounds at unlimited length with configurable quality.  Voice Record Pro can record directly in MP4 (AAC), MP3 (MPEG) and WAV (PCM) formats plus convert function for all supported formats.  Voice Record Pro is a professional voice recorder.  Professional Voice Recorder for iPhone, iPad and iWatch!  No limitation, Completely FREE!  None of the features are limited by in-app purchase, they are all free and without limitation. in-app purchase can be used to remove the bottom advertisement from the app. - Unlimited recording, the only limit is your device free space. - Record audio in M4A/AAC format, you can choose the exact quality of the record including bitrate, sample rate, bit depth, number of audio channels and encode quality. - Record audio in MP3 format, in addition to sample rate, bitrate, bit depth and number of channels you can also set to record MP# in VBR (Variable Bit Rate) or CBR (Constant Bit Rate). - Record audio in WAV/PCM format, sample rate, bit depth and number of channels can be configured. - Ability to enable/disable iOS Voice Processing and mix with background sounds. - Ability to record in stereo format on supported devices.