I have a photo I edited in LrC on my iMac. The photo has synced to my iPad and iPhone, but the Edits did not sync. The message I have is "Waiting for Settings. This photo is missing settings from (my) iMac. How can I get the Edits/Settings to sync?
Welcome to the Lightroom Classic community. I'll help you figure this out.
What version of Lightroom Classic & the operating system are you working on?
Apply a flag or rating to some of the images syncing in Lightroom classic & let Lightroom sit idle for 30-40 minutes to finish syncing. Log on to Lightroom Web (https://lightroom.adobe.com) & check for any sync issues on the web. Before making any changes to sync issues, do locate & back up these images away from Lightroom. Lightroom sync might not function as expected as there are sync issues.