Some photos albums are empty after connecting to iCloud
I used to sync my photos manually with the master library on my Mac Book Pro and I selected which albums I wanted on either my iPhone or iPad. With the upgrades last fall my devices would not sync completely. This is documented elsewhere. So I bit the bullet and purchased 2TB of cloud space. After about 7 days it appears the library was transferred to iCloud with the originals on the Mac. However, now my iPad and iPhone appear to have most of the photos but also have a series of albums with no photos in them. For example the "People from my Mac" has all the names but no people.
What can I do to rectify this.
Paul
iPad Air Wi-Fi + Cellular, iOS 11.2.6