If something you added in Google doesn't appear in Quieta, or vice versa.
Make sure you're looking at the right schedule: family, Organizer Q, or helper view. Use the Q pill row.
Confirm the source (Google Calendar, Phone Calendar, iCal) is still connected. Reauth if it asks you to.
Pull down on the Stream to force a sync.
If still missing, support@quieta.co with the approximate time + title of the event so we can trace it.