I have a problem with synching a photos library on my parents’ Mac. Basically they just use one iPad and one iMac. The iMac is older already, I think it runs Sierra or High Sierra. All the photos are fully available on the iPad. On the Mac however, they show up as thumbnails, but when I want to open them full size, some photos show a broken link picture. All pictures seem to be fully available in the cloud, but I can’t get them to sync to the Mac.
Any suggestions? Thanks for your help!