FE File Explorer Pro funktioniert nicht

Directly view and manage documents, photos, files on your computer and cloud without downloading to your iPhone/iPad. * Access network shares on macOS, Windows, Linux, Time Capsule, NAS via SMB/CIFS protocol. * Access cloud storages: Dropbox, Google Drive, OneDrive, OneDrive for Business, Box and iCloud Drive. * Automatically discover comptuers, NAS and servers when you setup new connections. * View, copy, move, rename and delete your files right on iPhone/iPad. * Stream movies and musics from network shares and cloud storages to iPhone/iPad. * Distribute configurations via MDM (Mobile Device Management).  Copy files among servers, cloud storages, iPhone and iPad.  Backup photos to network shares, servers and cloud storages.  It can access not only local files, but also files on your computer, NAS and cloud storages.  Use document picker extension in iWork and Office apps to open file from network share and save it back after editing.  Nearby file transfer: Directly transfer files between two nearby iOS devices without Wi-Fi or LTE connection.  Copy photos between iOS photo library and network shares.  FE File Explorer Pro is a powerful file manager app on your iPhone and iPad.  Transfer files among those locations.  Stream movies and music to your iPhone/iPad.  Document: EPUB, PDF, WORD, EXCEL, PPT, PAGES, NUMBERS, KEYNOTE, TXT, HTML etc.  Photo: JPG, PNG, WebP, GIF, CR2, NEF, ARW, DNG etc.  Video: MOV, MP4, AVI, XVID, MKV, RMVB, WMV, FLV etc.