Cloud Sync is online.

A device that’s behind catches up by itself, and straight away when you open Mimir on it.

You found the server that keeps Mimir in step across devices. Every note passing through here was encrypted on the device that wrote it, so it carries them all without being able to read a word.

Its name is Mímisbrunnr, after the well where Mímir kept his wisdom. Odin gave an eye for one drink from it. Keeping your notes in step costs a good deal less.