How to fix Messages syncing on a Mac

Macworld

Messages is designed to sync across all your devices logged into to the same iCloud account. iMessages sync by default; SMS/MMS and RCS messages sync if you’ve enabled access to them from your iPhone. (Go to Settings > Messages [iOS 17 and earlier] or Settings > Apps > Messages [iOS 18] and under Text Message Forwarding, decide which devices receive these.)

If you have Messages in iCloud enabled, syncing and backup occur in part through iCloud, creating...