On one of my Macs, sync with Dropbox often stops for days at a time. I added a password yesterday on my iPad. Today it's synced to my iPhone and to one Mac, but the other one says "Last synced: 3 days ago". There's no way to tell it to sync. Quitting and relaunching 1P doesn't trigger a sync. It just sits there saying "3 days ago". Dropbox works fine on this Mac, and aside from syncing, so does 1P.
1Password Version: 7.7
Extension Version: Not Provided
OS Version: 10.13.6
Sync Type: Dropbox