Turning it on and off
With a project open, go into settings and pick Sync Settings from the Project group on the left. Outside a project this tab is not there. There is one switch, Cloud Sync. As its description puts it, “Sync this project to the server so you can pick it up on your other devices. Turn it off to keep the data on this device only.” When you try to turn it off, a Turn Off Cloud Sync warning appears. It says changes will not travel to your other devices, and that data may be lost if the app is uninstalled or device storage is cleared. It appears once per device, so read it then.

The Sync Settings tab in project settings. One switch turns cloud sync on and off for this project.