DS file 4+

- This update is only available for iOS 13 and above versions.
- This is the last version to support signing in through the WebDAV port. As for the next release, please sign in with the DSM port (5000 by default) instead.
- Enhanced security level of connections.
- Supports TLS 1.3 encrypted protocols and its modern compatibility for higher level of security when connected to Synology NAS running DSM 7.0.
- Enhanced the connection experience by reducing the probability of untrusted SSL certificates when connecting via QuickConnect.
- Shortened the photo thumbnail rendering time in File Station running on DSM 7.0 or above versions when backing up photos via DS file.
- Fixed an issue where uploading videos with the same name might fail.
- Fixed an issue where printing PDF files might fail.
- Fixed an issue where the application might quit unexpectedly when connecting via WebDAV.
- Fixed an issue where the "Always open HTML files using plain text format" setting in File Station is not applied on DS file.
- Fixed an issue where the application might quit unexpectedly when downloading multiple GIF files for offline access.
- Fixed an issue where the application might quit unexpectedly when uploading a large number of photos.
- Fixed an issue where the status bar at the top might not be hidden while playing videos.
- Fixed an issue where searching files by create date might fail when connected to Synology NAS running DSM 7.0.
- Fixed an issue where users are unable to download files or open PDF files when connected to Synology NAS running DSM 7.0.