Thank you for the response, Korm.
What I had understood from the OP, and what is my intended use, is to sync the files between my MacBook and my iOS devices via the WebDAV server on the Synology NAS.
In DTPO, that would mean setting up a WebDAV server, and populating it with the relevant info from my Synology.
Now, I am presently able to sync when I set up a WebDAV server using my Synology information for local network syncing. And I am able to do it when setting up a separate one for external access (using Synology’s own DDNS provider). However, the former doesn’t work when I’m not on my local network (obviously), and the latter doesn’t work when I’m on my local network (obviously).
What I want to know is how to set things up such that – wherever I am – my DT databases are syncing via my Synology NAS, using the same http address.
Again, I know this is not the place for NAS support, but if someone has successfully done so here, ti would be of great help. I would rather keep my files on my own NAS, then upload them to someone else’s cloud (like iCloud), however much easier that might be.
Thank you for your help.