Nonplay

I have exatcly the same issue with a new SEAGATE NAS 2BAY. The BitTorrent Sync was installed directly by the App Center on the NAS. The daemon runs with root privileges and writes new folders and files with the same permissions. However, the group owner assigned to the files seems to be equal to that of the parent folder. In my configuration it would be sufficient to set automatically the group mask in RW in order to modify the files from other sources. Thanks.