Sure. Do all computers use the same Dropbox account & sync store for synchronizing? Is a verification (see contextual menu in Preferences > Sync) successful?
Thank you for the screenshot! What exactly is out of sync? According to the screenshot you’ve cleaned the sync store. Are the same databases enabled after selecting the sync store in the preferences?
Yes, we noticed last week that changes were not reflected on the other computer. So I cleaned the sync store and re-synced the “original” computer with the sync store.