I’m new to the Synology system. I’ve set up a new DS220 and I’ve installed the Photo app on the unit and my iPhone 12. I’ve watched several video and read the online instruction an I can not get it to backup all of the photos. I can upload selected photos but I really don’t want to individually select each on with over a thousand photos. I’ve set up photo backup complete and enabled sleep time backup but nothing backs up. Can someone point me to a solution?