Syncing with Timelime
In order to sync your Timelime tasks and timings across Macs and iPhones, make sure you are running the latest version of Timelime on all devices.
Once Timelime sync is enabled, your data is synchronized automatically. Under normal conditions it is not necessary to use the "Force sync" button.
Also, please consider these details:
Make sure iCloud Drive is enabled.
On the Mac, this setting is found in macOS System Preferences > Apple ID. On the iPhone it is found in Settings > AppleID > iCloud. If you are logged into iCloud and iCloud Drive is enabled, but Timelime doesn’t want to connect to iCloud, reboot your device. This can fix iCloud sync problems.
To be in sync with other devices, ensure you are using the same iCloud account on all devices.
There is no need to install and run the Dropbox app on your Mac. You just need a dropbox account. If you don’t have one yet, create a Dropbox account here. It is free for up to 2 GB of data.