Recognition looks unfinished
Open Settings → Scanner & Recognition. Compare Visual Index Progress with Recognition Ready and Images pending before scanning a large batch. Rebuild Visual Index and Clear Recognition Cache do different jobs.
Troubleshooting
The camera is connected to the wrong device
Open Settings → Camera. Default Camera lists built-in cameras, USB cameras, and Continuity Camera devices by name. Status reads Connected or Disconnected. If the saved camera is gone, the page says the preferred camera is unavailable and another camera is in use. Use Test Camera before a session. There is no remote-camera control in Developer settings.
Prices are missing
On Pricing, switch to Missing. Use Refresh Missing Prices. If a provider should be used, Settings → Pricing shows eBay and PriceCharting as Not configured until credentials are saved.
iCloud sync is off, waiting, or offline
Cloud Sync shows Sync My Collection, Last Sync, and Changes waiting to sync. Sync Now runs only while the switch is on. Sign In Required means the iCloud account is missing; the collection stays on this device. Offline keeps pending uploads until the next sync. If Sync Issues appears, choose Keep This Device or Use Other Device for that card. After a backup restore, use Merge With Cloud when you are ready to sync again.
An iPhone catalog does not match the Mac
Settings → iPhone Catalog shows both catalogs' card, set, and series counts and update dates. Send Catalog to iPhone is the catalog action. Sync Collection Now is the personal-collection action.
Restore would overwrite this device
Read the Restore From Backup note before choosing a file. It replaces the collection stored on this device.