I personally am fed up with my D-Link and on the best way to DAS, which i plan to share by using macOS Server, operating on Mac Mini. Also have you attempted to set the permissions by logging into your Synology DSM as admin and established the share permission http://create-bluetooth-shortcut55544.blogstival.com/16485742/a-simple-key-for-synology-recycle-bin-empty-schedule-unveiled