Wile installing on my Note 9 it imported / shows promptly each allready existing entry from each of my Calendars. But It does not import / synchronize any new entry ( via any calendar ). (  Within Android I already removed the app from being affected by the Battery saving-option ) ( 'Close the Demo' pop-up is not present ) Thank You very much for helping out because this way of visualization by merging Agenda and Clock-face is how my mind needs it (used it many years ago and never found it back again as a contemporary app. If only I get it to work..