Check the view first.
Open Calendar and confirm the selected date, time zone and view. Use Agenda when a simple list is easier to scan. If a range contains more results than currently loaded, use the available load-more control. A meeting may fall on another local date after a time-zone change.
Check the connection.
In Settings, confirm that the intended provider account is connected and active. Review the last sync and any reconnect message. A meeting that only exists in a different external account will not appear through the connected one.
A pending external change needs a check.
When the provider result is uncertain, do not assume another create request is safe. Review the existing meeting in the provider and use the available recovery action. Include the operation reference in a support request, without copying access tokens, private feed URLs or transcript content.