Devonthink Pro 3 - Icloud (CloudKit) sync does not work at all (Macbook, Mac-Mini, iPhone)

[BLUEFROG]

Can I use my synology disk station a remote sync location?

Synology NAS’ support WebDAV services so yes, this is possible.
One of our intrepid regulars wrote up a good post on a procedure specific to this…

How to use Synology NAS as sync store

Since the question arises occasionally, the following steps might help in setting up a Synology NAS as a sync store for DEVONthink. This explanation uses port forwarding. There’s a TL;DR about the basics that might help to set this up with another NAS. An alternative would be to set up your router as a VPN server and your mobile devices as VPN clients to connect to it. install WebDAV from Synology’s packet repository in its settings, turn on HTTPS, leave HTTP off and select the option to redir…