In order to enable the iCloud sync in the app, please go to the settings of the app and make sure that the ‘iCloud Sync’ toggle is turned on under the ‘iCloud’ section.

If the iCloud sync still doesn’t work, please make sure that you have enabled it in the settings of your device by tapping on your name, then selecting the ‘iCloud’ option, then in the ‘Saved to iCloud’ section tap on the ‘See All’ button, look for Accountit and make sure that the toggle for it is turned on.